Laws + costs of a server. Cloudflare is 100% in talks warning lemmy.world they aren't going to support them for free/$20/month.
I love how you dismiss the compliance as all you need. As if it isn't a crazy topic that requires a lawyer every other day plus hiring a team and creating a process to deal with child porn shit.
None of you know half the reality of running successful digital services.
Wikipedia is run by a central NGO which is something I've advocated for. What we have now, and what folks are conversing about isn't a sane model like you propose. People really believe this place isn't going to have serious child porn, disinformation, and censorship issues without someone competent taking over the main policing and privacy concerns.