Real talk, stuff like the fediverse has always always existed. Usenet, IRC, forums. Even email is a giant federated service.
The thing is, the billionaires have the resources to make something really nice and make you not want to spend time there, so the population stays relatively small.
Realistically, even among tech savvy people we see a lot of people complaining that the fediverse is too complex, and it isn’t a place that can be gamed like big tech so a lot of big names will likely stay over there.
that’s all a good thing. Stay big enough to be fun, small enough to stay off the radar.