Four corporations dominate the digital economy: Amazon, Apple, Facebook, and Google. Their total value on the stock market almost equals the gross domestic product of France. This kind of dominance is without precedent in economic history, warns Scott Galloway, a professor of marketing in New York. In fact, he asks whether the Four are none other than the Four Horsemen of the Apocalypse. In his informative book, Galloway explains how the Four rose to power: Through clever ideas, risk-taking CEOs, and lots of capital, they have become platforms that no one can avoid. Could a new company bring down the hegemony of the Four? Galloway proposes eight criteria for such an enterprise — but he believes that no other company fulfills them.