Probably the most famous example is the fate of the Encyclopedia Britannica which was for 200 years a solid set of volumes. It looked like one of the most stable features of our society as it were. Then when Encarta and other CD based encyclopedias came out it just knocked the market out. Now it is a kind of struggling Internet-based service, all 40M words of it. He thinks it will because there is a need to be somewhere.
Sociologists call it the compulsion of proximity.
Another thing is the breaking down of the boundaries between industries . Like between insurance and banking. I think we know that the Internet has shifted an incredible amount of empowerment over to individuals and that the ability of individuals to be connected is really unparalleled. The Internet plays both ways. Look at the telephone ladies in China.