Earlier quoted context omitted.
>For one thing, decriminalization is easy to do. Decriminalization is a bad idea. It increases demand, which gives gangs and mafia types more money. If you're going to do it, legalize it.
The Portuguese case study says that it's really not a bad idea (though not referring specifically the increasing or diminishing illegal business, just less "street value") [1][2]. But I agree with your corollary. [1] https://www.drugpolicy.org/sites/default/files/DPA_Fact_Shee... [2] https://en.wikipedia.org/wiki/Drug_policy_of_Portugal#Observ...
I find decriminalisation to be a pretty egoistic way around the problem. Sure, it makes lives better for people at home, but it completely ignores the massive amount of suffering countries (including Canada) has brought on supply and transit countries.