Once in my youth I dreamed of the future spent in reading words on flicking screens and seeing the crabbed past-present I imagined the future expanded into vast reaches of thousands of words, nay, even millions.
Unfortunately, the future isn't what it was cracked up to be. DRM, which truly means Digital Restrictions Mandated may mean a bleak future for book lovers with the looming end to the used book market altogether.
The first thing to accept is that no modern book, record or movie publisher truly wants you to "own" anything. They really believe that if you are reading, listening or watching anything you should be paying them, each and every time. One of the reasons for this is, they really believe that all their customers are thieves. Recently Bruce Willis asked his lawyer to sent up a distribution of his massive library of MP3 recordings and albums. His lawyer had to enlighten him that the moment he died, his rights and the existence of his music collection creased to exist. Bare in mind, there is very little difference between the cost of buying Cd's or MP3's. And through the ownership of the physical music on a CD has been accepted, the ownership of the digital copy only (fine print in the license agreement) exists for your lifespan (if that).
So, buy MP3's or digital books. You can't sell them, you can't lend them, and you don't (really) own them. Within our lifespan we will see the end of the used book, music and movie store and market. All so you lazy pieces of shit don't have to get up off of your Easychair to pop another disk into the player or pull a book off the shelf.