Actually, having some experience with Stellarium, I can tell you that there was an effort to offer the main developer (Fabien) a closed source license from all the developers precisely so he COULD sell Stellarium Mobile and some of his own personal enhancements and make a living after his current contract ended.

I believe that every developer with code, except one holdout, was ready to extend that license to him. The only holdout was someone with only trivial code, IIRC, so I imagine that Fabien might have replaced those commits with his own and Stellarium Mobile might very well be closed source, for the time being.

Here's my source:
http://sourceforge.net/mailarchive/f...arium-pubdevel