An incisive argument proving that current rules of business competition are rendered obsolete by the dynamics of information-age companies. Trust on Trial, a hard-hitting examination of competition in the modern marketplace, tackles the monopoly issue head-on. Through the lens of the Microsoft case, the first large-scale antitrust proceedings of the digital age, it challenges the efficacy of modern antitrust enforcement. While testing the appropriateness of new economic assumptions-from network effects to lock-ins-it forces us to ask whether nineteenth-century antitrust law, combined with twentieth-century enforcement norms, is applicable to the twenty-first-century problems of business organizations.