Prior art is as effective as US soldiers in Iraq: They control the ground they stand on, and nothing more. I used to say Vietnam, but, well, you know...
I partly agree with the underlying message that people should take charge and solve problems, rather than just cast blame on others.
The idea of free software is that users of computing deserve freedom. They deserve in particular to have control over their computing. And proprietary software does not allow users to have control of their computing.
We've partly removed the inconveniences of preventing a user from combining code from various free software packages.