[law]

> It's important to understand that when FSF talks about "freedom" they explicitly mean keeping the users free - not the developers. As a developer, I'm personally biased towards being free to other developers, and I think GPL (v2 and esp. v3) are very much pro-user at the cost of being anti-developer.

I don't think that's what the FSF means when they talk about freedom. Freedom is about keeping everyone free--developers and users alike. Copyleft licenses ensure that all derivative works be subject to the same licensing terms as the original work. It's a way to protect the self-perpetuating nature of free software that more permissive licenses fail to achieve.