Earlier quoted context omitted.
Content is not just culture, it is also entertainment. Indeed, the kind of content that is protected by DRM is mostly entertainment, and not very much culture. There is no reason entertainment should be free nor is there really a positive social value in making it free. What is the positive externality to society from some kid being able to listen to the latest Nickelback album or play the latest Gears of War game fo…
The discussion about culture in the context of DRM is far from "handwaving." Culture and entertainment have always been intertwined; don't let high culture snobs tell you otherwise.
In fact, these days I think of much communication, including "entertainment", as "cultural programming".
As such, it and its use (and citation, reuse, refactoring...) are central to our lives and to society's development (or lack thereof).