

If everyone agreed to move, there would be no problem (as long as the Fediverse can accomodate everyone).
There’s precedent. There was a myriad of social media sites Worldwide at some point. Then in a few years everyone “agreed” to move to Facebook. There are stories of how they aggressively took over markets, but at the end of the day I supposed they had the technically best site. And after over a decade of decay, people are still stuck.
An operating system should only be infrastructure to keep programs running. If I want an AI program, I’ll seek it out and get it myself.