Mark Cuban raises an interesting point in his TV everywhere post.
While anti-piracy proponents have a valid point of view, there is other side that needs to be fixed as well. We pay for the same content multiple times. I have bought same song (as part of same or various albums) multiple times.
Anti-piracy movement has one idea to sort out. What are customers paying for? Is it media (CD or DVD or tape or flash drive etc) or the song/serial/movie etc. Then we can ask why same movie can be priced differently on blue-ray disc, CD, or from the web or cable TV. This part is almost never part of the debate.