Expected that they need to make money with it. But then, how is it different from cloud9 ? (http://c9.io http://c9.io) I thought they would try to have it open

Expected that they need to make money with it. But then, how is it different from cloud9 ? (http://c9.io http://c9.io) I thought they would try to have it open source (as it's non-core to their business) and use it as a trojan horse to sell more private repos. But they could do that with free to use I guess. And it makes sense, then no one is allowed to removed the github-as-a-backend part, and people have to get the paid plans to develop closed-source software.