If you really want to bring crime into marketplace the first thing you do is make a desirable product illegal. Look what happened with Prohibition: they made alcohol illegal and set off a wave of organized crime across this country which we haven’t yet recovered from.
Comparisons between humanity's ten million year old association with alcohol and drugs are false on the face of it. Alcohol was completely ingrained in the culture, and it could not have been banned by passing a law.
Libertarians are always trying to say drugs are exactly like alcohol. They are trying to take a case with a specific and thoroughly engrained substance, and to assert that banning all other substances is exactly the same.
No, it is not. Drugs never met the percentages of usage and popularity that alcohol has always had. Drugs have been successfully kept down to level of 2% of the population which was the same as it was a hundred years ago when they first banned them.