Key difference is that is one relay author becomes "oligarchical" the notes just route around that (through different relays).
Key difference is that is one relay author becomes "oligarchical" the notes just route around that (through different relays).
+1, user owning the ID is a step in the right direction compared to "homeserver" owning the right key and makes this possible.
That said - maybe (total hypothetical) the reason one relay becomes really big is because a lot of people think it provides really good service, and maybe it's difficult to convince the majority of the network to route around it. This would create a similar problem to what we see in more well established federated chat networks.