I've had a lot of people ask how BlueSky compares to Mastodon and the Fediverse. I've tried to make the answer as simple and easy to understand as possible:
BlueSky is designed to give corporations and wealthy people full control of the network. All of its traffic has to flow through expensive-to-run corporate relays.
The Fediverse is designed to give ordinary people control of the network. All of its traffic flows directly from one cheap-to-run server to another.
@FediTips Cory Doctorow has written about the Sky one several times lately, but I think this piece is a decent verbal explication of what the graphic is representing visually (I'm not great with visuals; it took me a minute LOL): https://doctorow.medium.com/https-pluralistic-net-2024-12-14-fire-exits-graceful-failure-modes-fa815198e17d
Doctorow seems to think that if there is a choice of corporate relays, that that will somehow make things okay. I admire him greatly, but respectfully think he is mistaken on this particular topic.
About the diagrams on my post, they should be explained by the text in the original post? Fediverse servers are cheap to run and talk directly to each other, BlueSky servers can only talk to expensive-to-run corporate relays.