Addiction – Commercialized cannabis, like its alcohol and tobacco counterparts, derives nearly 70% of its revenue from less than 20% of users[1] -- those who use heavily and those who struggle with addiction.  Already, according to NBC4 Washington, “Several thousand people in the Washington, D.C., area have sought admission to state drug treatment programs for marijuana dependency in each of the past four years." [2]

[1] https://www.colorado.gov/pacific/marijuana/news/market-size-and-demand-study-marijuana-colorado

[2] https://www.nbcwashington.com/investigations/Thousands-People-DC-Area-Seek-Treatment-Marijuana-Dependency-506169521.html