首页|质量敏感度信息、垂直差异化竞争与信息保护政策的福利影响——数字经济时代双寡头模型再探

质量敏感度信息、垂直差异化竞争与信息保护政策的福利影响——数字经济时代双寡头模型再探

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  • NETL
  • NSTL
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数字经济时代,反垄断问题与信息保护问题交叉重叠,向公共政策的制定和落实提出巨大挑战.本文在产品质量存在垂直差异且消费者对不同产品的质量敏感度具有负相关性的市场条件下构建双寡头模型,探究不同强度的信息保护政策对寡头厂商的定价策略与消费者决策的影响,并在此基础上从福利指标的角度分析信息保护政策的具体效应.研究结论表明,对于消费者质量敏感度呈跨产品负相关分布的市场,强信息保护政策会带来社会福利的无谓损失,弱信息保护政策和不实行信息保护并不会带来社会福利的减损,原因在于信息通过促进竞争的方式削弱了寡头厂商的垄断力量.同时,在产品特征不同的情况下,强保护政策和弱保护政策对消费者剩余和厂商利润的影响并不相同,原因在于信息资源介入市场将会带来"垄断效应"和"竞争效应",这两种效应互相博弈抗衡,使市场呈现出不同的福利分配格局.本文结论对推进我国反垄断与信息保护工作的走深走实具有一定的政策启示.
The welfare impact of quality-sensitivity information,competition with vertical differentiation,and information protection policies——Revisiting the duopoly model in the era of digital economy
In the era of the digital economy,the overlap between antitrust and information protection issues poses a great challenge to the formulation and implementation of public policies.This paper constructs a duopoly model where there are vertical differences in product quality and consumers'sensitivity to the quality of different products is negatively correlated.It explores the impact of different information protection policies with different strength on the pricing strategies of duopolists and consumer decisions and analyzes the specific welfare effects of policies.The conclusion indicates that in the market where consumers'sensitivity to the quality of different products is negatively correlated,a strong information protection policy leads to the impairment of social welfare,and vice versa.The reason is that information weakens the monopoly power by promoting competition.Meanwhile,considering different product characteristics,a strong protection policy and a weak one exert different effects on consumers'surplus and manufacturers'profits because information will bring about the"monopoly effect"and"competition effect",both of which play against each other to make the market present different welfare distribution patterns.Thus,the conclusion of this paper has certain policy implications for promoting and deepening the actualization of China's antitrust and information protection.

antitrustinformation protectioneffects of policiessensitivity to qualityvertical difference

连增、甘朗、郑捷

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北京外国语大学国际商学院,北京 100089

山东大学经济研究院,济南 250100

反垄断 信息保护 政策效应 质量敏感度 垂直差异化

中央高校基本科研业务费专项资金北京外国语大学"双一流"重大(点)标志性项目研究成果北京外国语大学"双一流"重大(点)标志性项目研究成果北京外国语大学卓越人才支持计划国家自然科学基金面上项目

2023JJ0232022SYLZD0012023SYLA00672073080

2024

10.12011/SETP2023-1792

系统工程理论与实践
中国系统工程学会

系统工程理论与实践

CSTPCDCSSCI北大核心
影响因子：1.575
ISSN：1000-6788
年,卷(期)：2024.44(1)
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