You're a woodworker. You've developed skills that only few have. Carpentry Inc. approaches you regarding a partnership: you share your skills, they offer you their platform. Win-win, right? Now Carpentry Inc. decides to adapt the knowledge you provided, cutting you out of everything. You're powerless against a multi-billion corporation. All your years of work are gone. You're nothing more than an afterthought.
That's more or less the playbook.
Damn, I think everyone missed that detail! We're talking about two completely different companies here -- my mind is blown! Just look at the Hemming distance between "Google" and "Meta"! I'm convinced! Meta will never follow Google's footsteps.
Now how about you take a nice, cold shower and re-think your comment.
I see where you're coming from, but you're underestimating scumpanies like Meta et. al. https://infosec.pub/post/400702
In an ideal world, your suggestion might work. Unfortunately it will fail in practice. How are we to determine when it's not too late to migrate?
Personally I don't care for those users. If they want to blindly follow their piper, let them. But I don't want that cancer ruining more OSS.
Just like Google showed interest in XMPP?