The social network I wish to exist:

It’s like a classic blog; you publish on your (or rented) domain, but it’s a local-first app, so it’s independent on any specific server.

Posts are published as static JSONs to CDN, so it scales. A million followers can fetch from cached CDN safely.

People's comments are optional, and it’s up to the post owner if they are free, paid, or whatever.

My social graph is a set of links to other people's stuff stored in my @evoluhq DB.

That’s all. It’s simple and infinitely scalable. There are no centralized relays.