I think the Debian example is a useful one here. If you release your software under a NC license, then it can't be integrated into Debian. The reason for this i

I think the Debian example is a useful one here. If you release your software under a NC license, then it can't be integrated into Debian. The reason for this is that Debian is freely available for anyone to download and install. Someone in a large commercial company who installs Debian onto a random computer must be able to press the "install everything" button, and not be exposed to the hazard of accidentally installing something that (due it its commercial use inside a company) is in violation of its license. Even if it were a little CPU usage status widget in the bottom corner of the screen, that would be a violation. If Debian didn't enforce this set of rules on acceptable licenses, then the freedom to install the OS would not be there. I don't think anyone could really argue with a straight face that Debian shouldn't be free to install in commercial situations.