Well, those people _are_ very important. If GitHub was a platform only of paid customers without the plethora of open-source projects by non-payings customers (which are important customers still even if they don't directly contribute to the bottom line), it wouldn't have a commercial success in this magnitude either.

Anyway, it's an observation, I don't have data to back it up, but I see a lot of new projects actually starting with Bitbucket these days.