[mb0]

Couldn't it also be argued that the GNU limits user freedom by requiring users never use non-free software?

[steven777400]

No, because GNU licenses place no limitation on the use of the software, only on how it is distributed and combined with other software.

That's why it's ok to run a non-free program on top of Linux or install a non-free driver, etc.

[macspoofing]

There's the rub. It all depends on how you define 'free'. Under the FSF definition, it isn't. They would (maybe) argue that this isn't a valid definition of 'free' because it would be like saying you're not 'free' unless you have the right to subjugate your neighbor.

[dllthomas]

No, because they don't require that they just advocate it.