I've been employed by the University of Helsinki, and that has been paying my bills. Obviously a ''real job'' pays better than most universities will pay, but I've been very happy with this arrangement I get to do whatever I want, and I have no commercial pressures whatsoever doing this.
Linus TorvaldsWhile we ended up having several core maintainers use BitKeeper - it was free to use for open source projects - it never got ubiquitous. So it helped kernel development, but there were still pain points.
Linus Torvalds