Should penalties against monopolies be increased?

Background/General Sherman Antitrust Act Antitrust and monopoly: Anatomy of a Policy Failure (book) Is Amazon creating a cultural monopoly? The Problem  Are antitrust laws a thing of the past? Amazon’s monopoly must be broken up Does Amazon have a right to a price monopoly? Google charged by EU in antitrust lawsuit Monsanto’s control over seed markets prompts antitrust inquiry The market realities that undermine the anti-trust case against Google