Just recently I thought to myself "it has been a long time since I saw the Github Unicorn". As it turns out, I didn't really miss it at all.

Regarding the centralized nature of Github: it is the centralized communication that is a problem, not the ability to share code. I can easily send a patch to somebody on my team, but that doesn't help me review a PR, reply to comments, trigger a CI build, or initiate a deploy.

Code sharing is only a small part of what a team relies on Github for.