They'll bitch and moan then their finance manager will tell them to pay up because it's worth it. At least how I see it going down. Having that type of reach to your audience is pretty priceless and Twitter is the best means for quick short form messages to everyone that can be shared easily. Instagram and Facebook don't let them hit their followers in quite the same way.

Alt services don't stand a chance due to network effect Elon would have to really piss off everyone if it's just a few they can't really move effectively plus Parlor and those don't have the servers for massive amounts of people I don't think

Dude celebrities make many thousands per tweet promo. He could easily charge a $100k annual membership to the higher tier celebs based on follower account, make a cascading tier you pay based on followers down to the lowest rung maybe being $20.

It's so easy to turn this into a cash cow because the people making millions off their audiences would obviously pay for it since the ROI is still massive for them