Will anyone really want herb in a decade though? Vaporizing extracts is just far better than vaporizing herb, nobody wants that chlorophyll and what have you.
This is the case right now, but unless you’re buying poorly trimmed bulk outdoor stuff the extracts will inevitably get cheaper. You can get perfectly good THC and CBD from terrible weed and reintroduce a carefully designed blend of terpenes for the best possible flavor.
Eventually the cutting agents will get better too, delivering much nicer experiences for those that don’t want to puff on 70%+ THC extracts.