This is the crux of every decentralized system. If there's no one there to host the data and make it available, you have to start somewhere.
The point of ATproto is that it gives you the option to move to your own, or someone elses. Bluesky is just a use-case which happens to provide a good enough platform that people don't need to host it. That's typically not the concern of most people anyway.
The point of ATproto is that it gives you the option to move to your own, or someone elses. Bluesky is just a use-case which happens to provide a good enough platform that people don't need to host it. That's typically not the concern of most people anyway.