Moderating Reddit subs can be a huge money maker. I know people making $100K/year from it. There are cabals, especially in the adult sections. Reddit has tried to address this recently by limiting the number of subs a person can moderate, but that just causes these big accounts to create more user accounts and split all their subs up that way.
On the adult subs, at least, menu links, sidebar links and banner ads, automod reply links, and by limiting your sub to only paying guests or your own managed models.
Plenty of subs blatantly allow certain brands to advertise while banning anyone else. Kind of amazed Reddit themselves haven’t put more effort into to stopping it since it kinda sidesteps their in house advertising.
Because said 100k'er are probably paying off someone inside reddit. Remember when Ebay sent some couple bloody pigs masks? Yeah evil people work at companies.
At scale they will. For now, someone else puts the effort into growth marketing, eyeball capture. Reddit eventually changes the rules, seizing control, thereby acquiring users for less human cost (as opposed to missed revenue opportunity).