@TranshumanBlues @davidrevoy They can (and will) use posts federated with them to train AI. They can use those data to target ads. Both are behaviors unwanted by plenty of instances. They can start extending protocol in a way incompatible with the rest, lure users to them with more power than anyone else, and then close federation when it's no longer advantageous, gutting Fediverse in process.

It's not a new thing, Google did the same with XMPP and Google Talk. Who now remembers that Google Talk was federated? Facebook's Messenger is XMPP based and FB promised to federate it too - which never happened. Ironically, even WhatsApp is XMPP.