I don’t put it in the same category as tomatoes.. I think more along the line of tobacco. I know a lot of smokers and not one of them grows their own tobacco. It’s too much of a pain.
Many people make the mistake of thinking that growing MJ plants is that easy ! Trust me "it is not" !! Grow lights / timers / proper seeds / differentiation between male and female plants/correct fertilizer/ pots/ soil/ knowing how to get the plants to bud properly/ correct conditions for drying and storage etc .
I repeat "its not that easy or quick ! Brewing beer and wine is much easier ! FYI - I've done all of the above !