it’s decentralized. it’s at no more risk of this than there is on mastodon, except that on bluesky the network is designed to allow your post history and full account to be moved to a new host even if your host vanishes overnight.

on mastodon if your admin decides to start charging or shut down your instance all of a sudden you’re just out of luck. you can’t even migrate your followers if that happens. you disappear completely. https://mastodon.social/@nicklockwood/110275075937947368