Music hasn't been sold with DRM for over three years, but it still makes up a sizable portion of The Pirate Bay's offerings. You could say that musicians are being tyrannical by choosing to distribute their recordings in the way that maximizes their profit instead of choosing to give it away. I would reply that some people do choose to give away their work. I'm happy to live in a world where people get to make that choice of what to do with something they've created.
Obviously movies, tv shows, and books are another matter. Personally, I think it's only a matter of time until those go DRM-free too, but a "matter of time" might longer than any of us would wish for. This is more of a matter of business model. There never really was a rental model for music in the physical media era, however, consumers seem to have a demand for a digital version of renting movies. With books, I think the parallel is libraries where you could sign out a book and return it. In any event, consumers seem to prefer paying a lower price for the ability to consume a movie/tv show/book for a limited time window to paying a higher price for the ability to keep it.
It should go without saying in this community that a rental model for media without DRM simply wouldn't work. Because there would be no means to return the movie/tv/show/book other than making the user promise to delete the file, a DRM-free "rental" would become equivalent to a sale. The result would be less consumer choice.
As for when the "sale" option goes DRM-free, I think someone will come along and offer movies in three tiers:
1. rental (with DRM, obviously), for about $4 2. sale, with DRM limiting how many times it can be copied, for about $8 3. sale, DRM-free, for maybe $12
It will be interesting to see how many people opt for #3. Getting a critical mass of people to choose to spend a little more for a DRM-free product is how we'll get to a future without DRM. The number of people using sites like The Pirate Bay won't even be a major factor in those discussions.