Me and a handful of friends started a formally registered non profit in germany. Not internet related but art related stuff and it was surprisingly easy, fast and even more surprising the regulations and requirements actually make sense. That is the way to go to secure that no admin ever goes nuts and takes an entire instance with them lmao.
I‘m fairly certain that similar organizations exist in most countries snd the process should be relatively similar.
Yes and no.
let's say I have a website that hosts user generated content like a forum or something. Some other person just hosts a mirror of my website that is not under my control. If some user requests me to delete his data, I can do that. i cannot delete the data from the mirror site.
Nothing else is happening in the fediverse. The only difference is, that in the fediverse the license and technology is set up to encourage mirroring content.