Yeah, yeah.
Human sacrifice, dogs and cats living together, mass hysteria. It's just FUD, much of which has already been beaten thoroughly to death.
If you bought Lotus 1-2-3 or spent a few days on a Hypercard stack, there was no guarantee that software would work -- or that you could open those files -- on every computer ever made at any time in the future into perpetuity.
The same pitfalls face many means of transmitting content. E.g. you can't play vinyl records in a CD player, VHS tapes in a Blu-Ray player, 5 1/4" floppies in a smart card reader, use a Motorola Star-Tac with a 3G network, or use Atari 2600 cartridges in a Wii.
Books do tend to last a long time, and don't require an intermediary device. But you also can't back up your paper library to a CD in 30 seconds, and store it somewhere else in case of some type of unfortunate disaster striking your home; you can't carry hundreds of paper books in your backpack, and so forth.
Oh, and let's not forget that the allegedly evil DRM-ridden Amazon does sell DRM-free music. Hmmmm.
It's good to let people know how ebooks are different from paper, and like every other technological innovation it's not a 100% positive change. That doesn't validate this kind of fear-mongering.