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市场上存在一个上游和一个下游企业 ,上游企业通过 R& D可降低产品成本 .本文研究上游企业的 R& D投资和下游企业的产品产量随纵向一体化的变动情况 .研究表明 ,纵向一体化之后 ,上游企业的 R& D投资、下游企业的产品产量、行业利润、消费者剩余和社会总福利均增加 .在纵向一体化之前 ,上游企业的 R& D投资和下游企业的产品产量较少的原因是它们作出决策时没有考虑对方的利润 .最后以一个特例对研究结果作进一步说明
There is an upstream and a downstream enterprise in the market, and the upstream enterprises can reduce the product cost through R & D.This paper studies the R & D investment of the upstream enterprises and the changes of the output of the downstream enterprises with the vertical integration.The research shows that after the vertical integration, R & D investment in upstream firms, product output in downstream firms, industry profits, consumer surplus and total welfare in society both increased.Due to the vertical integration, the R & D investment of upstream firms and the output of downstream firms are less due to their Make a decision without considering each other’s profits.Finally, with a special case of the results of the study for further instructions