Earlier quoted context omitted.
I don't think most marijuana smokers are going to want to bother growing their own marijuana any more than cigarette smokers bother to grow their own tobacco. People are also very attracted to brands and swayed by marketing. I don't doubt for an instant that the marijuana industry is going to be gigantic if it ever becomes fully legal in the US.
I don't think the economics are comparable at all. Given that cannabis is literally an invasive weed, getting started is really easy and takes very little (horizontal) space. A past neighbor in Northern California just randomly stuck a few seeds from a dispensary in the middle of her backyard garden, did a little research on how to take care of it, and four months later had more cannabis than the entire block could s…
I also enjoy trying a wide variety strains, which wouldn't work out so well if I was cultivating only a few plants.