承诺制的新古典经济学分析□孙克任对于服务承诺制这种做法，有人从道德与社会主义精神文明建设的角度进行评论。作为经济学者，我们更愿把它看作一种经济现象，从经济学角度，利用新古典经济学工具对其进行分析，分析其性质及其产生的原因。一、自然垄断行业存在的原因自... Neoclassical economics of commitment system □ Sun Keren’s approach to service commitment has been criticized from the perspective of moral and socialist spiritual civilization construction. As an economist, we prefer to think of it as an economic phenomenon, from an economic point of view, the use of neoclassical economics tools to analyze it, analyze its nature and its causes. First, the reasons for the existence of natural monopoly industry since ...