I believe it’s mainly main character syndrome. Like when we play a game like GTA, you care more about your own stats, progress and wealth, and maybe that of other players, but couldn’t care less about most of the NPCs, and that gameplay dynamic seems attractive to most people.
Another way to look at it is the higher up on the perch you are, the more everyone else looks like ants. You probably won’t intentionally leave some sugar for the ants, but if they get a few you don’t mind.
As for the richest of the richest of the rich, they need to stay influential for various evil reasons.
The only site I’ve been suspended in was X (twitter) recently, and it was on a lurker account I mainly use to follow people and rarely ever post on, and it was after coming back to the app after a few weeks of absence lol.
Automated modding seems to fail on those sites, while giving users modding powers is always abused. I guess it’s manageable if there’s support, which X doesn’t seem to have anymore.