Selling one's personal data and selling one's 'soul' (principles) are two different things.
Just because GitHub only requires an email address to join, doesn't mean they're not incentivised to replace a decentralised Free Software system (git) with a centralised proprietary alternative (git+github).
I'm a massive fan of git, which is precisely why I do not, and never will, use github.
Hmm. I wasn't thinking about it from that perspective. Still, I don't see github as a replacement, but simply an optional nice UI for git collaboration. It's easy to set yourself up so that if Github went down or you wanted to move off it, you could. The only tricky part would be not investing too deeply in the issue tracker, but that's not a replacement for git anyway.
I'm not sure they can be said to be incentivized to do something that's nearly impossible.
Just because GitHub only requires an email address to join, doesn't mean they're not incentivised to replace a decentralised Free Software system (git) with a centralised proprietary alternative (git+github).
I'm a massive fan of git, which is precisely why I do not, and never will, use github.