The major aim of establishing a public corporation is to

The major aim of establishing a public corporation is to provide essential services to the public. Public corporations are established by the government to provide certain services to the public, which are deemed to be of national importance or necessary for public welfare. Examples of public corporations include the Nigerian National Petroleum Corporation (NNPC) which provides petroleum products, the Nigerian Postal Service (NIPOST) which provides postal and courier services, and the Nigerian Railway Corporation (NRC) which provides railway transportation services. The main objective of these corporations is to ensure that essential services are provided to the public in a manner that is efficient and affordable. They are usually established to cater to services that the private sector may not be willing to provide or may not be able to provide profitably.