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本文应用Oaxaca-Blinder分解方法,把垄断行业高收入分解为合理和不合理两个部分。实证分析发现,垄断行业与竞争行业之间收入差距的50%以上是不合理的。这主要是行业的垄断造成的。由于目前收入统计未能反映垄断行业的高福利,以上测量结果显然低估了垄断行业高收入中的不合理部分。
In this paper, Oaxaca-Blinder decomposition method is used to decompose the high-income monopoly industries into two parts: reasonable and unreasonable. Empirical analysis found that more than 50% of the income gap between monopoly and competitive industries is unreasonable. This is mainly caused by the monopoly of the industry. Since the current income statistics do not reflect the high welfare of the monopoly industries, the above measurement results apparently underestimate the unreasonable ones in the high-income monopoly industries.