跨国公司、产业链与企业的购买势力

On the Relations among Multinational Firm,Industry Chain and Buying Power

借助于一个上下游模型,对跨国公司、产业链和企业的购买势力对消费者利益和社会福利的影响进行研究,可以得出如下结论:第一,无论是国资企业还是外资企业先行进入市场,也不管是哪个企业拥有购买势力,企业购买势力的增强都会降低上游企业的利润。第二,无论上下游企业是否组成产业联盟,如果连锁企业是国资企业,那么其购买势力的增加可以提高消费者剩余和社会福利;但是,如果连锁企业是外资企业,那么其购买势力的提高必然会损害消费者利益和社会福利。第三,无论上游企业是否是国资企业,如果下游的国资企业与之缔结产业联盟,都会改善社会福利。

There are several conclusions will be made to study the impact of multinational firm, industry chain and the buying power on consumer surplus and social welfare by using a vertical pricing model as following. Firstly, an enterprise increasing its buying power will harm the benefits of its upper firm no matter domestic firms or foreign finns. Secondly, whether there is an industrial alliance or not, if a domestic firm increases its buying power, then raising the consumer surplus and social welfare, however, if a foreign firm does that, then reducing the consumer surplus and the social welfare. Thirdly, on matter what kind of status of its upger firm, a lower national firm with its upper firm to form an industry chain will improve the social welfare.