I don't think that's what the DRM debate is about. I'm anti-DRM and I'm anti-piracy. DRM doesn't attempt to punish pirates. It pre-supposes that I am a pirate, and must therefor have my books shackled to a particular device or otherwise constrained. I resent the implication and will not participate in a business relationship with a vendor who assumes all of its customers are thieves.
As many have already pointed out, DRM only punishes the innocent. So many of these DRM vs. Piracy threads miss the point entirely. I'm not anti-DRM because I'm a book pirate. I'm anti-DRM because I'm not a pirate and refuse to be treated like one.