Let's say copying is legal. And let's say I have a newly-released, deluxe edition DVD movie you'd also like to buy. I tell you not to buy one yourself and instead pay me the full price (or thereabouts) of my DVD, and I'll send you a download or DVD-R of it.
Does that sound enticing?
I won't give you the original disc, or any packaging, or anything you can put on a home library shelf, and if ever you want to sell it on Amazon or eBay (say, when the next "Director's Cut" version comes out) you can't, because I've got it and all you've got is... well, nothing. But you've paid for it anyway. And if you try hard enough, you can even delude yourself into thinking you "own" it.
Fantastic. Thanks Apple. Great ruse. Looks like many here will be more than happy to play your game.