I think the key point with what seems like the wacky suggestions like the Colombia one is that it couldn't get any worse.  If you drop the moral pretense and look at harm reduction then we have the perfect system for creating the maximum harm.  I haven't been to the states but I understand that Cocaine is available in most places so the 1b on enforcement doesn't actually do anything other than raise the prices and lower the quality of the product.

We have a couple of models that work.  Making it available but unfashionable like tobacco.  Regulating it and creating a culture of use to reduce harm like alcohol.  We didn't do particularly well with the culture bit in NZ.