General Motors versus Toyota. CBS versus CNN. Pan Am versus British Airways. RCA versus Sony. Suppose you had been asked, 10 or 20 years ago, to choose the victor in each of these battles. Where would you have placed your bets? With hindsight, the choice is easy. But at the time, GM, CBS, Pan Am, and RCA all had stronger reputations, deeper pockets, greater technological riches, bigger market shares, and more powerful distribution channels. Only a dreamer could have predicted that each would be displaced by a competitor with far fewer resources—but far greater aspirations.