Cory Doctorow erklärt im Guardian, warum DRM unwirksam, unnötig und nicht im Interesse der Verbraucher ist: Pushing the impossible.
And the thing is that if a DRM is broken once, it’s useless. The breaker can put his copy of the movie, music, ebook, or software online on a peer to peer network or fileserver, and from there anybody can „break“ the copy protection simply by downloading a copy. It’s a one-shot deal. DRM is supposed to force those unwilling to pay into buying, rather than nicking, their media – but once the cheapskates can search for a cracked copy on Google, it is meaningless.
This means that ultimately, DRM only effects people who buy media honestly, rather those who nick, borrow or cheat their way to it. In turn that means that the people who ultimately bear the inconvenience, cost and insult of DRM are the paying customers, not the pirates. There are some fundamental truths in the universe. We cannot travel faster than light, and we cannot make a copy protection system that is uncrackable. The only question is: how long will paying customers stay when the companies they’re buying from treat them as attackers?