Comment by kakwa_

I think the gain sits in the middle: if the giant server starts to get iffy (moderation, content, policy, technical issues), people can leave it somewhat easily and form or grow another decently sized server which will have enough reputation from day one.

We already have other decently sized GH alternatives such as Gitlab, Codeberg and various OSS forge instances (freedesktop, Fedora, Debian, etc) which could be federated and become a safe harbor if we were able to maintained project visibility and discoverability.