They can now get a legal job selling it over the counter. They can get licensed and sell it legally via delivery or whatever (I don't know the regulations). They can leverage their growing operation into a legal business that sells to dispensaries. They can get a job in another field...though, the skills acquired through dealing illegal drugs aren't necessarily very marketable.

I dunno...but, we didn't, as a nation, mourn the end of bootlegging as a career option when alcohol prohibition ended. So, I'm not going to mourn the end of the small-time drug dealer (or the large scale cartel dealers, either).