The vast majority of the playerbase does not craft/gather and are the ones giving the botters the bulk of their business, lamentably. This is also why the outcry surrounding the matter tends to be so small compared to less important things like housing (Which is actually affected by bots to a noticeable degree between people using them to get houses as well as regularly choosing to buy out houses using their botting alts for reselling purposes or just to be annoying).

I do wonder how many of them would make a conscious to not buy from them if they were actually aware of what's going on, though.