Table of contents
Shrinking the Black Market
How legal supply undercuts illegal markets without naivety.
Executive Summary
A serious case for drug legalization or broader drug policy reform cannot stop at one lazy sentence:
“Make it legal and the black market disappears.”
That is not serious. It is marketing.
The better claim is harder and more honest: regulated drug supply can shrink black market drugs and weaken the illegal drug market, but only if the legal side is safe, accessible, visible, and competitive enough to pull buyers away from criminal sellers. If legal policy is clumsy, the legal cannabis black market lesson is obvious: illegal sellers survive in the gaps. That is the real argument in this chapter.
The stakes are not abstract. Final CDC data show the United States still recorded 79,384 drug overdose deaths in 2024. DEA’s 2025 National Drug Threat Assessment says “drug cocktails” are becoming more common and that one in four cocaine submissions and one in eight methamphetamine submissions included fentanyl, which means the current illegal market remains chemically unstable even when top-line overdose numbers improve.[1][7]
Earlier parts of this series already made the building blocks of this argument:
• Part 5, how prohibition feeds drug market violence and cartel power
• Part 9, risk-based drug regulation
• Part 14, the regulated pharmacy model
• Part 16, pilot-measure-scale discipline
• Part 23, what the status quo looks like if nothing changes
This chapter pushes the argument one step further.
• Regulated drug supply can pull demand away from black market drugs.
• The illegal drug market does not vanish automatically just because lawmakers change the statute.
• Drug market violence and transnational crime do not disappear on their own.
• The legal cannabis black market experience shows that price, convenience, and safe supply all matter.
• The highest-risk lane needs risk-based drug regulation, a regulated pharmacy model, strong diversion control, and real treatment on demand.
That is how you shrink the black market without lying to people.
The Market Problem This Chapter Solves
The current system makes two mistakes at once.
First, it leaves the most dangerous parts of the market in criminal hands.
Second, it lets opponents pretend the only alternative is naïve deregulation.
Neither is true.
A working system is not one where every illegal seller vanishes overnight. A working system is one where the legal option becomes safer, more predictable, easier to reach, and more trustworthy than the criminal alternative for a growing share of consumers. That is what actually shrinks black market drugs over time.
So the real question is not whether regulation magically erases the illegal drug market.
The real question is this:
What makes people switch?
That is where the evidence is useful.
1. Why Regulated Drug Supply Can Actually Shrink Black Market Drugs
The best evidence does not say legal markets automatically crush black market drugs.
It says something more useful: people move toward regulated drug supply when it offers the things illegal sellers cannot reliably match, lab testing, predictable quality, known potency, legal access, and lower friction. In a 2024 discrete-choice study of adults in U.S. recreational cannabis states, the likelihood of choosing legal cannabis increased when the product had a lab test, higher perceived quality, shorter distance to the seller, and lower price. The authors found that allowing delivery, increasing dispensary density, improving quality and safety, and lowering prices or taxes could reduce illegal-market share.[2]
A Canadian behavioral-economics study made the same point more directly. It found that legal cannabis functioned as a “superior commodity” relative to illegal cannabis and that the availability of legal cannabis substantially reduced demand for the illegal option. But it also showed the price gap mattered: legal cannabis suppressed illegal purchasing most clearly when priced the same as, or only slightly higher than, illegal cannabis.[3]
That is the first rule of regulated drug supply:
If the legal option is safe, available, and not absurdly overpriced, many consumers prefer it.
That is how black market drugs start losing share.
Not by speeches.
Not by slogans.
By substitution.
2. Legal Cannabis Black Market Lessons: Convenience, Price, and Safe Supply
The clearest real-world lesson comes from Canada.
Health Canada’s 2024 Canadian Cannabis Survey found that among past-year cannabis consumers:
• 72% reported purchasing cannabis from a legal source
• 3% reported using an illegal purchase source
• 67% said they always obtained cannabis from a legal or licensed source
• and among past-year consumers, 95% said legal cannabis was fairly or very easy to access.[4]
That is a huge shift in market capture.
It also tells you why the legal cannabis black market issue is more nuanced than either side admits. Health Canada found the three biggest reasons consumers chose a source were:
convenience (30%)
price (23%)
safe supply (22%)[4]
That one list is basically the whole strategy for shrinking black market drugs.
If the legal option is convenient, priced sanely, and visibly safer, consumers move. If any of those fail, the illegal drug market keeps room to operate.
Illinois’s 2025 annual cannabis report tells the same story in a more cautionary way. Illinois users said legal cannabis was safer to buy (62%), safer to use (56%), and more convenient (48%) than illicit alternatives. But 56% said legal cannabis was worse on price, and the report bluntly concluded that high prices continue to blunt the competitive edge of the legal market.[5]
That is the legal cannabis black market lesson in plain English:
People will often choose legal, but not at any price and not through unlimited inconvenience.
If reformers ignore that, the illegal drug market survives in the gap between what policymakers want and what actual consumers do.
3. Why the Illegal Drug Market Survives When Legal Policy Is Clumsy
This is the part reformers often get wrong.
They assume the legal market only has to exist.
No. It has to compete.
A 2024 economic assessment of U.S. cannabis tax policy concluded that high sin taxes may drive consumers toward illicit markets, even though anti-illicit-market policies can limit the damage. The authors described the problem as a trade-off: if taxes rise too high, the legal market gets weaker and the illicit market gets more room.[6]
That means a clumsy legal regime can accidentally protect the illegal drug market by doing things like:
• stacking too many taxes
• issuing too few licenses
• restricting store density too aggressively
• blocking delivery
• delaying testing and product rollout
• leaving quality and availability inconsistent
• allowing legal prices to stay far above illegal ones for too long
This is not an argument for weak regulation. It is an argument for smarter regulation.
A serious regulated drug supply model has to beat the illegal option on the attributes that matter most:
• reliability
• legality
• quality
• safe supply
• convenience
• enough price competitiveness to matter
That is why the phrase “shrinking the black market” matters more than the fantasy phrase “ending the black market.”
You shrink it by making the legal side win more of the actual consumer comparison.
4. Drug Market Violence and Transnational Crime Do Not Disappear on Their Own
None of this means a legal market makes criminal organizations vanish like smoke.
DEA says the 2025 NDTA is a review of the threats posed by deadly illicit drugs and the violent domestic and international drug trafficking organizations producing and trafficking them. The same report says “drug cocktails” are becoming more common and notes that one in four cocaine submissions and one in eight methamphetamine submissions also included fentanyl. DEA also says Chinese transnational criminal organizations dominate domestic cultivation and distribution of marijuana in states where the cannabis industry is legal.[7]
The FBI’s transnational organized crime page makes the same broader point. It describes criminal groups involved in drug trafficking, money laundering, extortion, human smuggling, murder, and related crimes, and says the FBI targets Western Hemisphere transnational organizations involved in illicit finance and the flow of illegal drugs.[8]
That is why drug market violence and transnational crime remain central even in a reform framework.
A legal market does not eliminate the need for enforcement.
It changes the target.
Instead of spending the bulk of effort on low-level possession and symbolic crackdowns, the state can focus harder on:
• violent suppliers
• cross-border trafficking networks
• counterfeit pills and contaminated supply
• tax evasion and money laundering
• unlicensed sellers who keep feeding the illegal drug market after legal alternatives exist
That is what smarter public safety looks like.
And it is why the phrase “without naivety” matters in the subheader.
A legal market that does not pair regulated drug supply with real enforcement against remaining violent actors will not shrink drug market violence enough.
5. Risk-Based Drug Regulation Reaches the Highest-Risk Illegal Drug Market
The cannabis example is useful, but it is not the whole picture.
The highest-risk illegal drug market is not just about adult retail demand. It is also about dependence, overdose, unstable supply, and people who are already trapped in the most dangerous lane.
That is why Part 29 has to connect back to risk-based drug regulation and the regulated pharmacy model.
CDC says 54.6 million people needed substance use treatment in 2022, but only 13.1 million received it. NIDA says medications for opioid use disorder reduce overdose deaths and other harms, yet fewer than 1 in 5 people with opioid use disorder receive them.[9][10]
That matters because the highest-risk illegal drug market does not shrink simply by opening a few legal stores for lower-risk products.
It shrinks when the state creates safer, more governable alternatives for people currently buying the deadliest products from the least accountable sellers.
That is where risk-based drug regulation matters. Lower-risk products can move through tightly regulated adult retail. The highest-risk lane should not. That lane belongs in something like the regulated pharmacy model argued for earlier in this series:
• tighter documentation
• stronger diversion control
• identity checks
• product standardization
• direct links to treatment on demand
• stronger oversight and accountability
That is also where overdose prevention finally stops being a slogan and becomes market strategy. If the illegal option remains easier to access than care, people stay in the illegal drug market. If the safer option is connected to treatment on demand, medical supervision, and more stable safe supply, the highest-risk segment of the illegal drug market can actually start losing ground.
That is not naïve. It is the opposite.
6. Shrinking Black Market Drugs Without Naivety: The Operating Checklist
If policymakers actually want to shrink black market drugs, the checklist is not mysterious.
It looks like this:
1. Make regulated drug supply easier to reach
Enough stores, enough access points, sane delivery rules, and enough legal availability to compete on convenience.[2][4]
2. Keep legal prices competitive enough to matter
Not price-free, not tax-free, but not so inflated that the illegal drug market gets protected by law.[5][6]
3. Win on safety and product trust
Lab testing, known potency, real product labeling, and visible safe supply advantages.[2][4][5]
4. Keep the highest-risk lane out of ordinary consumer branding
Use risk-based drug regulation and the regulated pharmacy model where risk is highest.
5. Tie legal access to treatment on demand
If addiction is the problem, legal access without treatment on demand is incomplete.[9][10]
6. Maintain hard enforcement on what actually harms people
Violence, fraud, contamination, youth sales, remaining cartel supply, and large-scale diversion still deserve aggressive attention.[7][8]
7. Measure the market honestly
Track legal share, illicit share, price gaps, youth access, contamination, and violent activity so accountability is real, not ceremonial.
That is how regulated drug supply undercuts the illegal market without pretending the job is easy.
The Bottom Line
The argument for Part 29 is not that legal supply solves everything.
It is that the current model is leaving too much of the market in the hands of people who sell contaminated products, rely on coercion and corruption, and adapt faster than law.
A serious regulated drug supply model can shrink black market drugs and weaken the illegal drug market when it gets four things right:
• access
• price
• safety
• targeted enforcement
The legal cannabis black market experience shows that legal systems can win large market share when they are convenient and trusted. It also shows that high prices and weak access leave room for illicit sellers. The broader lesson is even clearer: if reform is paired with risk-based drug regulation, a regulated pharmacy model, real treatment on demand, strong diversion control, and tougher action against drug market violence and transnational crime, the black market can be pushed back instead of endlessly fed.
That is not naïve.
That is what strategy looks like.
Frequently Asked Questions
Does regulated drug supply eliminate the illegal drug market?
No. Regulated drug supply can shrink the illegal drug market, but it does not make every illicit seller disappear overnight. The evidence points to substitution, not magic. Legal markets pull demand away from black market drugs when they are safe, accessible, and priced competitively enough to matter.[2][3][4][5]
What do legal cannabis black market data actually show?
The legal cannabis black market experience shows both progress and limits. In Canada in 2024, 72% of consumers reported purchasing from a legal source and only 3% reported using an illegal purchase source, but price still mattered a lot.[4]
Why do black market drugs survive after legalization?
Black market drugs survive when legal access is too expensive, too inconvenient, too sparse, or too slow. Research suggests lower prices, delivery, better quality, safety guarantees, and greater dispensary density can reduce illegal-market share.[2][5][6]
How does drug market violence fit into this?
Drug market violence does not disappear just because a legal option exists. DEA and FBI both describe violent drug trafficking organizations, money laundering, and broader criminal activity tied to drug markets. That is why shrinking the black market still requires strong enforcement against violent actors.[7][8]
Why bring in risk-based drug regulation and the regulated pharmacy model?
Because the highest-risk segment of the illegal drug market will not be displaced by lower-risk retail alone. Risk-based drug regulation and the regulated pharmacy model are how the state offers safer, tighter, more accountable alternatives in the highest-risk lane.
What role does treatment on demand play?
A big one. Treatment on demand matters because many people in the highest-risk market are not just shopping; they are surviving addiction. Without treatment access, the illegal option stays too attractive by default. CDC and NIDA both show the size of the treatment gap.[9][10]
References
[1] Centers for Disease Control and Prevention, National Center for Health Statistics. U.S. Life Expectancy Hits Record High as Drug Overdose Deaths Decline in 2024. https://www.cdc.gov/nchs/pressroom/releases/20260129.html
[2] Xing J, Shi Y. Cannabis consumers’ preferences for legal and illegal cannabis: evidence from a discrete choice experiment. BMC Public Health. https://pubmed.ncbi.nlm.nih.gov/39227852/
[3] Amlung M, MacKillop J. Availability of legalized cannabis reduces demand for illegal cannabis among Canadian cannabis users: evidence from a behavioural economic substitution paradigm. Canadian Journal of Public Health. https://pubmed.ncbi.nlm.nih.gov/30523535/
[4] Health Canada. Canadian Cannabis Survey 2024: Summary. https://www.canada.ca/en/health-canada/services/drugs-medication/cannabis/research-data/canadian-cannabis-survey-2024-summary.html
[5] State of Illinois. Cannabis Health Committee FY25 Annual Report. https://cannabis.illinois.gov/content/dam/soi/en/web/cannabis/documents/media/reports-and-public-presentations/2025-AUHAC.pdf
[6] Han J, Mottaleb KA, Ng’ombe JN, Durand-Morat A. Does sin tax on the legal market facilitate the illicit market? An ex-ante assessment on the US cannabis market. Journal of the Agricultural and Applied Economics Association. https://onlinelibrary.wiley.com/doi/10.1002/jaa2.114
[7] U.S. Drug Enforcement Administration. DEA Releases 2025 National Drug Threat Assessment. https://www.dea.gov/press-releases/2025/05/15/dea-releases-2025-national-drug-threat-assessment
[8] Federal Bureau of Investigation. Transnational Organized Crime. https://www.fbi.gov/investigate/transnational-organized-crime
[9] Centers for Disease Control and Prevention. Stigma Reduction. https://www.cdc.gov/stop-overdose/stigma-reduction/index.html
[10] National Institute on Drug Abuse. Medications for Opioid Use Disorder. https://nida.nih.gov/research-topics/medications-opioid-use-disorder
If you want to follow the full series as it publishes, visit the full Drug Legalization Series. If you prefer audio conversations on recovery, reentry, and purpose, check the podcast page. For program directors building reentry and transition programming, see ReturnPath reentry curriculum. For the personal story behind this work, read A Vision of Hope. To invite Andrew for a keynote or panel, see speaking.