rice of its output, the firm is classified as an “petitor”.Р4РAcid Test for petition Is Downward Tilt of Firm’sРdРdРdРdРQuantityРQuantityРPriceРPriceРFirm Demand under petitionРFirm Demand under petitionР5РFirm Demand under petitionРdРdРQuantityРPriceРAn increase in its rival’s prices will appreciably shift its own demand curve left to d’d’Рd’Рd’Р6РType of Industry StructureР9Р中国案例分析1:?中国互联网垄断调查报告发布Р互联网实验室在京发布《中国互联网行业垄断状况调查及对策研究报告》指出腾讯、百度、阿里巴巴均涉及垄断,其中腾讯垄断程度最大。QQ占据即时通讯市场份额的76.56%。轰动一时的3Q(360与QQ)大战就是最明显的表现。腾讯联合百度等五家公司抵制360是典型的缔结垄断协议行为。而腾讯QQ捆绑搭售的现象恰恰是最具代表性的互联网垄断手段之一。Р10РOligopolyРMarketРFew SellersРMany BuyersРFew sellers; little or no difference in product; or products are differentiated.РSome of the most vigorous rivalries in the economy are in markets where there are but a few rival firms.
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