I agree, because DRM has potential to outlive copyright law. Sure, many DRMs are broken, but there are many that are not. As the arms race escalates, DRM will become harder and harder to crack (I can think of a few offhand that AFAIK have never been cracked publicly, like the encryption used on cable systems in the US). The people in control of the various DRM systems are not even thinking about future noninfringing use, because they're not even thinking about current fair use in developing these systems. These are largely people who do not think copyright should expire that are driving these anti-public efforts.