TFW you complain about a player being dominate, and then immediately refuse to use any smaller rival because they aren’t dominate.

WTF? Get over yourself.

I don't choose which platforms communities and friends move to. I have limited agency in this situation and exercising that is pointless due to network effects. I'm not annoyed about dominance, I'm annoyed about monopoly abuse.

Well that’s the crux isn’t it? You want to complain, but declare yourself helpless in the face of multiple options. You’re the problem here.