You’re wrong, and the courts have said you’re wrong. See first sale doctrine on Wikipedia. The most recent case was UMG vs Augusto, where the courts confirmed in 2011 that even if you are sent the CD for free, you nevertheless own it and the copy of the music that’s on it, and you can resell the disc and the copy of the music, even if the supposed “license agreement” on the CD says otherwise.
So far the courts have ruled that there’s no first sale right with respect to purely digital copies. This is an important distinction between physical delivery of music, books and movies, versus pure digital distribution. You are losing rights when you opt for pure digital.
That’s why, as I already mentioned, I feel vendors shouldn’t be allowed to say that you are “buying” a book when it’s a digital file you can’t resell; they should have to be up front about the fact that you are renting or licensing it.
It’s also a problem for the content producers, I think. If they can only rent me digital content, I’m only willing to pay rental prices for it, and they need to factor that into their pricing strategy. Typically they don’t, which is why I mostly still buy video games on disc.
