Earlier quoted context omitted.
In the fediverse, you're more likely be able to say "Hey Lisa, why did you ban me?" than you can get into contact with the Youtube/Facebook/etc forces that be. That may or may not be better because your admin may respond "Well because I think you're a jerk and disagree with your political views" but at least you can migrate to a new instance still instead of just being banned for all eternity.
If you want to keep your followers you'd need to migrate before they ban you. But yes, I guess you can start over somewhere else while on big ones you're out forever. So in that sense I guess it is a tiny improvement. But if most of your followers were concentrated on server[s] that don't like you, you may not be able to reach them anymore.
This seems extremely unlikely. If the server admin doesn't like you enough to ban you, I strongly doubt you're going to have many followers there.
In any case, however likely or unlikely it is in practice, the incentives here seem exactly right to me. If you want the benefits of being part of a community, you have to respect its norms in your interactions with others in the community. The possibility of losing connections with people in that community if you are forced to leave it is part of the deal.