No one wants to pay for anything, and that's the true root of every issue around this. People complain YouTube has ads, but wont buy premium. People hate Elon and Twitter but won't take even an ounce of temporary inconvenience to try and solve it.
Threads exists, I'm happy they integrate with Activity Pub, which should give us the best of both worlds. Why don't people use Threads? I'd a little more popular outside the US but personally, I think the "algorithm" pushes a lot of engagement bait nonsense.