I saw that, and I thought that that Bezos should have made the obvious comparison to the iPod. The only reason to buy a Kindle is because it gives you access to material in a way that you would not have had otherwise, and that's exactly what an mp3 player does by giving you access to your music library anywhere. A Kindle could potentially have the same kind of advantage.
For myself, I still listen to CDs and still read the newspaper, so what do I know?