Wow, I never thought of that.
But let's stimulate some discussion by comparing books to music. I still buy some CDs, but, except for Wal-Mart, I have to drive one hour to buy a CD at a store, and the store is Best Buy at that! I buy downloads. My stereo will be going to the pawn shop soon, as will all my CDs. My local Barnes and Noble recently reduced its inventory by about 1/3 to make room for university hoodies and cowbells. If not for the coffee shop and textbooks, I don't think it would have survived.
In what ways are books different enough from music that will "save" them? I have some ideas, but I'd like to see what the rest of you think.
1) they're low-tech, self-contained. You don't need a gramophone or a CD player or an iPod. You can read your book on the beach, or the bus, or while cast away on a desert island with no electricity.
2) Books have no DRM. Because of that, you get actual property rights, which are worth having. You can lend them, resell them, let them appreciate in value...
3) ...get them signed by the author, or inscribe them for a loved one; because they are rival goods, limited to the number you actually make, they're collector's items, and can be physically personalised. Or indeed gift-wrapped.
4) they're physically beautiful in a way that only LPs really managed with music - and unlike LPs, the unique advantages of 1), above, mean that they won't get superseded by more convenient formats. Not entirely, anyway.
Books are remarkable packages. The cover art, the tactile qualities of the format, the typography, the layout, and yes, even the smell - all of those can't really be replicated. You can get the cover art to show on your iPad, but you can't have all those spines around you on your shelves. You can have a nice light ergonomic ereader, but it's always the same one. You can control the text design to the extent that the software allows, but you can't lavish the kind of bespoke attention on it that a skilled typesetter can - that's a job of work. And until we can have a scratch-n-sniff Kindle, the book-sniffers will never be satisfied.
5) Books are trophies. After you've read a book, you cart it around with you for years, and only part of that is to maintain a library of things you might want to reread. A lot of it, I think, is about being able to maintain a memory of the book - a kind of physical referent to trigger it. I know that when I access my memory of a given book, it's the look and feel of it that pop up first - even the place on my shelves, as if my mental filing system has patterned itself after my physical one.
I think that people will want to own physical copies of the books they love most, because they then become part of your world more tangibly.