I think the biggest problem associated with most states that have legalized for recreational use is what to do with all of the money. So to answer your question,"yes, gold mine".

Similar to hard liquor though, the capability to distill (not make wine or beer) is easy for most people but it is still a federal crime to do it without proper licensing. Bootlegging laws have been on the books for quite some time and I have not seen a large effort to have it changed.

Of course, growing a plant is even easier than setting up a mini-still. Also, I don't think there are many medical conditions that are aided by the use of alcohol.