[pwalker8]

Well, of course not all books are currently available in ebooks. The point is that since ebooks don't take warehouse space and are not taxed as inventory, you can easily always make them available for purchase. Having a book always available for purchase is a very different model than the old model of a book being reprinted every few years on a regular basis. Ebooks only go out of print when the copyright holder doesn't want to make them available. While I'm sure there will be the occasion where the copyright holder wants to remove them from the market, I doubt it will be the norm.