ATProto infrastructure is mostly open and there are folks operating pieces of it independently even if the landscape is dominated by the Bluesky PBC. It's true

ATProto infrastructure is mostly open and there are folks operating pieces of it independently even if the landscape is dominated by the Bluesky PBC. It's true that Mastodon grew bottom-up without centralized funding so the shuttering of the PBC will be a big deal for the AT ecosystem but it's all independently doable.