This may well be a small nail in the coffin, going forward. They may be slow to change, but they're already clear on the point that the main driver for ebook piracy is scarcity and inconvenience to the customer rather than malice: this is hardly going to help sell them on DRM (especially as Adobe are bound to be charging on the supply side -- demanding fees for new software and encryption keys and requiring publishers to re-encrypt their entire backlist).