Public policy plays a crucial role in regulating the behavior of firms within oligopolistic markets to protect consumers and encourage fair competition. Given the potential for anti-competitive conduct in oligopolies, antitrust laws are a regulatory framework to oversee and maintain market integrity. These laws deter firms from engaging in harmful practices and provide mechanisms for enforcement and penalties, including dismantling monopolistic entities when necessary.

Implementing antitrust laws involves actively monitoring market activities by government agencies. For example, the Federal Trade Commission (FTC) in the United States is empowered to investigate and pursue legal action against firms that violate competition principles. These laws encourage competition by enforcing rules on mergers and acquisitions, ensuring that such consolidations do not lead to undue market concentration that could harm consumer interests.

Furthermore, these laws support innovation and efficiency by creating an environment where firms must compete by offering better products and services rather than relying on anti-competitive agreements. The goal is to balance preventing practices that unfairly limit competition and allowing businesses the freedom to operate efficiently and respond to consumer demands.