Originally Posted by elemenoP
This is not a technical issue. Everything you describe is possible, but the publishers would never want to do it, so they are not going to implement it. It doesn't benefit the publishers to allow people to resell or give away DRM content.
Well said. DRM was never good at stopping piracy. It's just there to boost the death rate among sold copies and so ease competition against newly released books. The ever-growing copyright durations have the same aim. DRM is not about fairness, and I think it's a waste of time to come up with schemes that try to make it so unless there is some way of imposing them on the DRM imposers.