I've only read a little about Nostr, but I think the difference is that with Nostr you own your own identity, so if a relay bans you you can just switch to a di

I've only read a little about Nostr, but I think the difference is that with Nostr you own your own identity, so if a relay bans you you can just switch to a different relay and continue as you were with no significant disruption. You're probably right about shared blacklists eventually becoming a thing though.