Natural Monopoly

What Does Natural Monopoly Mean?
A type of monopoly that exists as a result of the high fixed or start-up costs of operating a business in a particular industry. Because it is economically sensible to have certain natural monopolies, governments often regulate those in operation, ensuring that consumers get a fair deal.

Investopedia explains Natural Monopoly
The utilities industry is a good example of a natural monopoly. The costs of establishing a means to produce power and supply it to each household can be very large. This capital cost is a strong deterrent for possible competitors. Additionally, society can benefit from having natural monopolies because having multiple firms operating in such an industry is economically inefficient.