The combination of git being an open protocol, and open source licensing (as it's meant to be) means that you can definitely fork and re-host many projects on Github. The issues that practically stop you from doing this aren't actually the fault of Github. I'm not trying to defend Github here, but it's not the best example you could have chosen.
What open source project uses multiple DVCS repositories (e.g. bitbucket, github, sourceforge, sourcehut, etc) for one project in sync with each other? I haven't found a single one that does that.
And that's before we start talking about tickets and discussions, pull requests, wiki and documentation, etc.
> What open source project uses multiple DVCS repositories (e.g. bitbucket, github, sourceforge, sourcehut, etc) for one project in sync with each other? I haven't found a single one that does that.
There are some that have official mirrors on GitHub and perhaps even accept pull request here. But I think that only reinfoces the notion that GitHub is an effective monopoly.
