In many cases, the price or the market mechanism is not powerful enough for the allocation of resources in the economy, for example, goods and services that have the characteristics of a natural monopoly or public service, which include utilities (water, electricity and telephone. etc.), infrastructure (roads, bridges, dams, etc.) can be seen that most such products and services will require a large investment. Modern technology Risk of losses Due to a long-term payback. Not economically worthwhile Fear makes private investment to produce. As a result, the government had to act on their behalf. Due to these products and services is a basic requirement that people need. It can be seen that such cases should be able to act in the allocation of resources.