Effective regulation on alcohol has an upper limit due to how easy it is to make. Cannabis has this too, but you still need either a place with visible sunlight (which can probably be easily seen) or an indoor place using a lot of electricity/producing a lot of heat, plus the seeds. You only need sugar and yeast to make alcohol, and you can do it in a well hidden place without using a lot of energy

It’s trivially easy to make enough weed for personal consumption; certainly much easier than making alcohol (safely). The thing that’s hard is growing enough to sell.

You've newer brewed your own beer, cider, wine or sugar wine, have you?

You've never grown weed, have you? It's called weed for a reason.

Both are easy to make.