I don't think you should see the 5T number as static, but rather as "it took a couple months and 20M users to get to 5TB", which projects to hundreds of terabyt

I don't think you should see the 5T number as static, but rather as "it took a couple months and 20M users to get to 5TB", which projects to hundreds of terabytes of storage pretty quickly. I agree 100% with you that we probably want mid-scale orgs to run relays and those would be able to run it without issues (I wrote "not so easy" rather than "impossible" :) ) but I think it's significant we haven't seen a single one popping up yet. But again, the article I linked makes a very good point: Bluesky does not need to actually be decentralized as long as it is a "credible exit" that someone else could in theory run their own Relay/AppView, even if no-one does.