These days "preferred content" comes in many forms, and once one experiences a situation where can be carried on your waist, vehicle caddy, or tossed with your shirt and shoes in luggage or tank bag - it changes things.
My entire music collection exists within iTunes on my PC, but the same music is also stored in Google Music "in the cloud". As a result, my CDs sit primarily in a closest except for a few that travel in my vehicle - however, I don't buy that many CDs these days.
Amazon knows that the next "frontier" is what exists today as printed material; and both Google and Apple are furiously working to also become the lead in content delivery. I'm working on an app for my other Triumph site to function within Google Currents. I like Barnes and Noble like anyone else, but am concerned that the traditional storefront model will suffer as this business grows. In time, many folks will get rid of their printed books and just access them online using whatever device they wish.
We are moving back to a thin-client computing world. Instead of green-screen terminals; we're using tablets, phones, Smart TVs, and other devices to get things done.