Easiest answer is obviously demand. Many people equate CBD to all of the medicinal aspects of cannbis. Im in rec and medical shops all the time and hear it time and again. CBD is easily the single most important factor in recent legalization efforts and recreational bills passing through state level governments as it "finally legitimizes" weed as medicine. it was all and well for years to say weed helps with such and such but now that something can be pointed out scientifically as beneficial, it just snowballs from there.