Outbox model makes relay decentralization irrelevant
We can use 10 big relays and it would still be fine because if you get censored you can move to another relay or spin up your own
Discussion
Got this back, thoughts? 
nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s runs the biggest relay rn and he said it only costs something like a few hundred bucks a month
I think they could go cheaper with some cost optimizations