An age of giants

摘要

ONE BRIGHT morning earlier this year your correspondent travelled from New York to the University of Chicago to attend a conference on the threat to prosperity posed by monopolies. The journey began with an alarm beeping on a handset made by Apple (which has a 62% market share in America), then a bumpy taxi ride to the airport paid for using a piece of plastic issued by one of the three firms, American Express, MasterCard and Visa, that control 95% of the credit-card market. In the terminal, breakfast was scoffed from a supersized fast-food chain, while emails were checked using Google, which has 60% of the browser market.