But you sure as hell won't get Guardians of the Galaxy if everyone can just take their non-DRMed copy and share it with the whole planet.
Is that a promise? ;-)
DRM is expensive to develop and enforce and, as many examples have shown, pretty easy to break; most notably in large markets like Russia and China where it's largely unenforceable anyway. Result is that we have to pay not just for content but for lawyers and developers. I suspect DRM will be kept around as a fig leaf for another couple of years (it's already largely disappeared from music).