They collect sales taxes from medical marijuana dispensaries in California already. If it was legalized and mass produced without any fear of arrest or seizure the process would drop through the floor and there would be plenty of room for taxes. And there aren't many moonshiners left here in the South. Mostly it's just a good ole’ boy here and there cooking up a little hooch and sharing it with friends and family. There is no big market for it involving major organized crime like with illegal drugs. I bet 95+% of alcohol sales are through legal channels. So, if illegal growers are selling some weed like moonshiners in the South, it wouldn't be such a big deal.
I don’t think the state will be satisfied with just sales tax.