Github isn't git; if hg takes off, github (the company) can just add support for it. SCM hosting is very different than SCM software; the latter is usually...

Github isn't git; if hg takes off, github (the company) can just add support for it. SCM hosting is very different than SCM software; the latter is usually... not lucrative. Eg; I'm sure MSFT hopes to make money from their GVFS effort, but not by selling it – simply by using it as a marketing tool to establish credibility (eg; for Team Foundation Server and other developer products). Even if nobody _used_ GVFS, it could still be a profitable project for MSFT if it made everyone think MSFT an expert in source control. (To be clear, I love this incentive structure, and it's working on me – my respect for Microsoft is growing, thanks in part to GVFS).