If the government regulates a natural monopoly and sets a "fair return" pricing policy, then the regulated firm will have greater incentive to improve its operating efficiency.

Natural Monopoly

A type of monopoly that occurs when a single firm can supply the entire market at a lower cost than any potential competitors, often due to high fixed costs.

Fair Return

A reasonable profit that companies aim for, which covers costs and provides a sustainable margin without being excessive.

Operating Efficiency

The capability of an organization to deliver products or services to its customers in the most cost-effective manner without sacrificing quality.