Yeah, that's definitely a problem. One reason I think is that now you are by default signed up for mastodon.social, which results in a huge mastodon.social.

Maybe. One can hope. In the end though, my impression of how the broad structure of the fediverse has panned out is that we really shouldn’t underestimate the tendency for people to centralise.

I also think that most people are so used to centralized services by now. Like, I'm not blaming them for being immature, but there is still a long way to go for people to become mature digital actors. That's a big problem.

I hope that much of this will even itself out as the Fediverse grows. With Threads, soon there will be another big player in the Fediverse that will be the next center of it :D

My personal opinion is that

1. We need to get more people in the Fediverse
2. We need to educate people in the Fediverse towards more digital agency

If we get this done, the Fediverse grows heathily. But I think this will not happen necessarily with Threads joining. The people there are quite comfortable with their central services.

Instead, we should try to ally with the traditional communities of the web. I would be for Harry Potter fans, because they are themselves able to create their own spaces on the web, as they have managed to do for many years. There should be one or multiple Harry Potter-themed instances that attract H.P. fans and at the same time promote digital agency.