alcohol is a bit different than other drugs in that people also appreciate it as a culinary experience. most users of other drugs are not willing to pay 2-10x as much for the same drug in a better tasting form.
Having been to a legal marijuana shop and having had several pothead friends growing up I can confirm that marijuana users have all kinds of appreciation for culinary aspects of their drug. That's obviously different with pharma drugs, but for plants I think there's a comparison.
honestly I would believe this, but in my experience people are spending the extra money to get strains that are either more potent or have different subjective effects. I've never known anyone who would pay $100 for a gram just for it to taste good.
Lots and lots of stoners would disagree with you. Maybe this isn’t true for some things, but I remembers when ecstasy was really popular hearing people talk about different kinds.