Actually, Stallman is pretty clear in his stance. He doesn't care what kind of monetization scheme you use, but your customers have a right to see the source co

Actually, Stallman is pretty clear in his stance. He doesn't care what kind of monetization scheme you use, but your customers have a right to see the source code. You could ostensibly only give the source out to paying customers. You might argue "but then the client can take the source and change it and redistribute it", but how is that any different from real life? The fact that you can charge so much for scarce copies of physical goods is a flaw of physical objects, not a flaw of digital objects. The digital world doesn't support the monetization schemes of the physical. Fighting that seems to be a losing battle (see RIAA, MPAA, et. al)