There's "recreational" marijuana shops everywhere here now. Locally a few new ones went in and they are putting them next to and in the same building as convenience stores. So now, when I'm driving my work truck I don't go to those convenience stores. The billboards on the highway are full of their ads too, those businesses are doing pretty well I think.
Even the billboard companies are profiting from it. I think the marijuana business will boom and die, like video rentals for example. It's just a plant. Anyone could grow their own, like tomatoes. How many specialty tomato shops do you find?
