Just to pose a thought; how practical would it be for a small subject owner to run a FediVerse instance intended to stay localized to their domain?

For example: Indie game owner makes a reasonably popular game, they set up a website that Lemmy users can subscribe/join directly, and use that for forums/tips/discussions related to their game. People don't need to register as long as they have an account somewhere. Some number of users would be new to Lemmy and use that site's registration for later discovery. And, someday when X instance (the game, or the next popular one) gets infested by neonazis, everyone just moves to another and/or has other discussions backed up.

I don't know how practical or convenient that is though. I imagine a lot of groups don't want to risk lost users.