You go buy a Subaru and park it in the street overnight. When you wake up in the morning, the car has disintegrated, and in order to drive to work the next day, you must purchase the car again.
That is DRM in its current state, and once everyone figures out that the RIAA/MPAA sueing spree is really an attempt to enforce a new type of business model (rent-and-never-own), they'll lose popular support for their tactics pretty quick.
Making mix-tapes used to get you chicks. Now it gets you jail time.