I disagree with you, but admire your consistency. I think a lot of people pushing for "free information" draw an arbitrary distinction between digital things that are almost free to reproduce and physical things that are fairly cheap to reproduce.
I think the real difference here is not so much that the marginal cost of digital goods is low, but that customers also own the means of reproduction. That is the fundamental difference that leads to arguments over rights, and then to arguments over morals, as these things often do.