Why not combine the 4 rights of the GPL, so dear to RMS's heart (the right to view the source code, modify it and redistribute it) with the obligation to pay th

Why not combine the 4 rights of the GPL, so dear to RMS's heart (the right to view the source code, modify it and redistribute it) with the obligation to pay the developers a small price. This would create the best of both worlds: geeks can tweak and modify, consumers pay for the product, so software developers can sustain themselves and receive income for writing great code. In effect, the license would make the software libre, but not free. For those who know me, more specifically I'm talking about combining the Software Bill of Rights, which handles the question of how to share the proceeds among a group of developers, with some form of GPL or Apache license.