Isn't it more logical to assume that they will continue to move cocaine, heroin, meth, ecstasy, humans and weapons through their existing networks?
Yes but pot makes up 70% of all illicit drug use. You think their criminal enterprise can take a financial hit like that and not shrink? The effect of legalizing pot would probably cause more users to gravitate to it rather than the harder drugs because of availability and price.
From a market perspective legalization makes perfect sense and from a constitutional perspective it’s long overdue. Just because you don’t like dopers doesn’t mean you have the right to tell them to clean up their lives.
Legalize it, tax it and allow employers to fire employees that use. The functional members of society will remain so and the criminal aspects will diminish just like after prohibition and the fall of the mobs.
Legalize those too or criminalize everything, tobacco and booze.