From a view of economics, this article USES the theory of market failure to analyze the reasons causing this problem.
本文从经济学的角度出发，运用市场失灵的理论分析了造成这一问题的原因。
The deregulation theory includes new natural monopoly theory, contestable market theory, regulation failure theory and X-efficiency theory.
规制放松理论包括新自然垄断理论，可竞争市场理论、规制失灵理论、X—非效率理论；
The deregulation theory includes new natural monopoly theory, contestable market theory, regulation failure theory and X-efficiency theory.
规制放松理论包括新自然垄断理论，可竞争市场理论、规制失灵理论、X—非效率理论；
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