That's an interesting perspective, and I would take it a step further to say it's prisoner's dilemma but with millions of prisoners. From the media owners' per

That's an interesting perspective, and I would take it a step further to say it's prisoner's dilemma but with millions of prisoners. From the media owners' perspective, there's always going to be users who defect to piracy, so DRM is the resulting Nash equilibrium that maximizes benefit from not catering to pirates while still catering to customers.