Who are the main proponents of antitrust?

The main proponents of antitrust include government agencies like the Federal Trade Commission (FTC) and the Department of Justice (DOJ) in the United States, which enforce antitrust laws to promote competition and prevent monopolistic practices. Additionally, academics, economists, and consumer advocacy groups advocate for antitrust policies to protect consumer interests and foster market competition. Prominent figures in the antitrust movement have included politicians like Elizabeth Warren and Bernie Sanders, who emphasize the need for stricter regulations against large corporations.