[uiri]

hosting your own git servers and getting people to actually use them is a huge pain in the ass. More simply put: people just like using GitHub.

Given that this is the case, I fell like GitHub is entrenched enough that they could open source their codebase and not lose any customers. People are paying them for the convenience of someone else hosting their git repository.

[maerF0x0]

Technically you dont need a server. You just need access to remotes. That could be your team's repos. Then PRs just mean pulling from a coworker to your repo.

But yes, most of us are most comfortable with the central repository model.