Just because both the GPL and the media industry both rely on copyright does not make them equivalent. If anything, it's exactly the opposite--a company not complying with the GPL is making information inaccessible to the public; a company enforcing normal copyright is also making information inaccessible.

The GPL is basically an inversion of standard copyright: where copyright is normally used to restrict access, the GPL ensures access. So it's pretty easy to see how not complying with the GPL is similar to aggressively pursuing piracy or using horrible DRM.