Page "Natural monopoly" Paragraph 13

Mill also applied the term to land, which can manifest a natural monopoly by virtue of it being the only land with a particular mineral, etc.

Furthermore, Mill referred to network industries, such as electricity and water supply, roads, rail and canals, as " practical monopolies ", where " it is the part of the government, either to subject the business to reasonable conditions for the general advantage, or to retain such power over it, that the profits of the monopoly may at least be obtained for the public.

" So, a legal prohibition against competition is often advocated and rates are not left to the market but are regulated by the government.