See many Al Capones running shine and controling crime enterprises around it?
So Budweiser and Vodka are the same as crack and meth and cocaine and ecstacy. Legalize them all! Wonderful.
What you people do not see is good old human ingenuity. When weed doesn't work anymore, people invent crack, heroine, meth, etc...
Booze is booze. You cannot make new alcohol products that make you drunker for longer amounts of time. But modern chemisty will keep inventing new narcotics cocktails that cost more and will keep you higher for a longer time.
And if you think all the corner drug dealers will go out and get jobs at Burger King because you make weed legal, then you really got some issues.