What role do government corporations fulfill?

Government corporations fulfill the role of providing services that the private sector cannot or will not supply effectively. These entities are established to serve a specific public purpose and often operate in areas where private enterprises may find it unprofitable or too risky. For instance, government corporations like the United States Postal Service provide essential services such as mail delivery, which might not be adequately met by private companies due to high operational costs or the need to serve remote and less profitable areas.

This focus on services distinct from common government functions, and the ability to operate with a degree of independence from direct government control, allows these corporations to address public needs that the market might overlook. Their existence is crucial in ensuring that essential services remain available to all citizens, especially in sectors like transportation, housing, and utilities where access and affordability are significant concerns.