The book offers a new perspective on the development of competition in the United States in the first decades of the 21st century. Based on modern scientific research and international comparisons, the author shows that competition in the domestic American market is decreasing. This is due to increased lobbying and financing of political campaigns by large corporations and leads to a drop in wages, investment and economic growth. The book is intended for students, teachers, practicing economists and anyone interested in the problems of economics of industrial markets and antitrust regulation.