i don't understand this doomer mentality regarding the internet.
internet is a service that you choose what to engage and how. don't like a platform? find another, build it or stop using it altogether.
personally, i find these things really great has it helps nudge people into the more decentralized web. a few years ago those who were pushing for privacy respecting apps and platforms were deemed too paranoid.
Many people make their livings from these platforms. They cant leave without abandoning most of their income stream.
Network effects will keep a person on a platform until a critical mass of their social circle decide to leave all at once. I'm no expert, but I suspect that that critical mass is pretty high, maybe more than 50% of a person's circle. So it's not exactly vanilla free-market competition. Entrenched players have a pretty big advantage.