There are certain business rules [developers] need to obey, such as DRM, IPR [intellectual property rights], SIM locks and subsidised business models.
One of Nokia‘s employees said.
But perhaps the community has some education for Jaaksi and Nokia. […] Nokia’s barking up the wrong tree this time, because Nokia can do everything it wants with DRM, IPR, and SIM locks without bothering the Linux developers about it – and both Nokia and the Linux developers will like it better that way. It’s surprising that Nokia doesn’t understand that at this late date.
How to draw a bright line between free software and proprietary one can be read on Bruce Perens respons to Nokia.