For Nostr to work I should be able to run a shitty relay on a $3 VPS just to post my own notes and my followers should be able to talk to it. Currently there are dozens of hundred-dollar powerful-machine relays out there and they are all being killed by the DDoS of queries.

Clients must get smarter and automatically know how to find people and fetch their posts even if they are on a shitty relay in the dark corners of the internet.

Once that happens, then it will make sense for the network to scale horizontally, for people to spread around multiple relays instead of always gravitating towards the central set of the same relays where everybody is.