While I agree you can’t buy it, I think one of the reasons why Meta is considering federation at all is because some not insignificant fraction of the 1 in the “90-10-1” social media model has left Meta’s circles and is now active in the Fediverse. I think Meta wants their content and engagement. I also think this same group is probably going to be the first to leave for a Meta-free island of the Fediverse. If I’m right about this, Meta probably doesn’t want to drive these users out. Should they rage farm the Fediverse, they inevitably will. Could be wrong of course.