I mentioned getting ads setup on hive.blog a while back but blocktrades was not interested, though he did say someone else was free to set that up. The overall tone was that the work/costs were not worth the likely projected benefits...
Hasn't stopped LEO though.
Didn't stinc rake in thousands of dollars from add revenue? O yeah people on the top dismiss it for ideological reasons. If people don't want adds they can just use an add blocker or you can build a front-end where you can opt out.
All social media sites derive their market value by add placement. It's just that simple.