Klobuchar writes of the historic and current fights against monopolies in America, from Standard Oil and the Sherman Anti-Trust Act to the Progressive Era's trust-busters; from the breakup of Ma Bell (formerly the world's biggest company and largest private telephone system) to the pricing monopoly of Big Pharma and the future of the giant tech companies like Facebook, Amazon, and Google.

She begins with the Gilded Age (1870s-1900), when builders of fortunes and rapacious robber barons such as J. P. Morgan, John Rockefeller, and Cornelius Vanderbilt were reaping vast fortunes as industrialization swept across the American landscape, with the rich getting vastly richer and the poor, poorer. She discusses President Theodore Roosevelt, who, during the Progressive Era (1890s-1920), "busted" the trusts, breaking up monopolies; the Clayton Act of 1914; the Federal Trade Commission Act of 1914; and the Celler-Kefauver Act of 1950, which it strengthened the Clayton Act. She explores today's Big Pharma and its price-gouging; and tech, television, content, and agriculture communities and how a marketplace with few players, or one in which one company dominates distribution, can hurt consumer prices and stifle innovation.

As the ranking member of the Senate Judiciary Subcommittee on Antitrust, Competition Policy, and Consumer Rights, Klobuchar provides a fascinating exploration of antitrust in America and offers a way forward to protect all Americans from the dangers of curtailed competition, and from vast information gathering, through monopolies.