The beauty of the fediverse is that the last panel can’t happen.
We control our own instances. There’s no world where admins wouldn’t defederate from any Facebook attempt to barge in.
Maybe a few larger instances sell out, but users hold the power here now. If an admin betrays our trust, we’ll just make a new instance.
They only reason I started using hotels again is because my fiance gets good deals and they usually upgrade us because she works in the industry 🙂