So one case to think about is what if the other firm, you're Coke, what if Pepsi is pricing below cost?

一种情况是如果另一家公司,假如说你是可口可乐,如果百事可乐定价低于成本怎么办

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There's one other possibility here I've missed which is what if Pepsi prices at marginal cost itself?

这里还缺少一个可能性,即,如果百事定价在边际成本怎么办

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Well, one thing that goes wrong is that suppose Coke and Pepsi were able to either to write a contract or whatever to sustain joint monopoly output at this high price, this price which is actually producing positive profits in the industry it is going to turn out, therefore the price is going to be above costs.

我来说吧,问题出在这里了,假设可口可乐和百事达成了协议,不管签的是协议还是合同,只要能通过协约维持垄断产出,通过制定高价来达到正的利润就行,这样价格是高于成本的

耶鲁公开课 - 博弈论课程节选