DRM is a pain in the posterior, does not deter pirates, and basically just penalizes consumers.

It is also essentially useless - as was once again demonstrated by arnezami, who found the "processing key" that was used for every existing HD-DVD and Blu-Ray movie. Allowing any of them to be decrypted.

Before anyone says "but the studio's need it to stop piracy" they should remember that commercial pirates will copy the whole disk, bitwise, which copies the DRM'd disk as a whole, totally bypassing the DRM.