In many cases, Price or market forces is not yet powerful enough tool for resource allocation of the economic system. For example, goods and services that are characteristic of natural monopoly, or public goods and services, which include public utility services (electricity, water, telephone, etc.) Infrastructure (roads, bridges, dams, etc.) you will see that most of these products and services will require investment. State-of-the-art technology, their risk of loss due to a long payback period is not worth the economic terms. Make the private sector rarely dare to invest that will be produced. As a result, the Government must come into action instead. Due to these products and services is essential to people's basic. Such cases can be seen that prices could not come to serve in the allocation of resources.
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