We cannot do this now because user-hostile vendors have locked the functionality away from us. I think this is a perfect microcosm for the whole tradeoff: lock away the rest of your userspace and we might let you watch the new Batman DVD you already bought.
This choice of words perfectly captures the arrogance of these copyright corporations. Who are they to dictate how our computers work just to maintain their irrelevant business model? They're ones who should be playing by our rules, not the other way around. It makes me wish piracy was as bad as they make it out to be, to the point it kills them.