Neither a book nor a CD are "intellectual property" because such thing does not exist. You can own the physical objects, not the information inscribed on them. The fact that I learn a song or a book you wrote by heart doesn't deprive you from it, yet now I "own" it too. You couldn't prevent me from memorizing them, either, which proves that it you didn't "own" them to begin with.
Also, I never said anything about "upholding" anything. You seem to be stuck with legal terms and constructs that have zero relevance in this discussion, which is ontological.