I think music formats will keep changing for certain. Cds even though I like to collect them, will go by the wayside eventually. However the old brick and mortar book store will always be around in some form. People just enjoy that experience too much for them all to go away, some will yes. The big ones may all merge, Borders, B&N, Walden etc, but there will be something always I think.
Thanks for the clarification Yachtzee