Economic analysis frames the debates in U.S. antitrust, and as such, it resembles an Italian Opera. While the best economists in the world sing in front of judges, most of the audience loses something in the translation. Without a guide, it is easy for the spectacle to distract. Observers miss crucial details, and lose the plot. Which motivates the topic today: How does antitrust economics inform a case against the big four tech firms in the United States -Google/Alphabet, Facebook, Amazon, and Apple? This question is under serious consideration today, so the answer is more than an academic exercise.

中文翻译：

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反垄断三法

经济分析构成了美国反垄断辩论的框架，因此，它类似于意大利的歌剧。当世界上最好的经济学家在评委面前唱歌时，大多数观众在翻译中失去了一些东西。没有向导，景观很容易分散注意力。观察者错过了关键细节，并失去了情节。这激发了今天的话题：反垄断经济学如何为针对美国四大科技公司——谷歌/Alphabet、Facebook、亚马逊和苹果的案件提供信息？这个问题今天正在认真考虑，所以答案不仅仅是一个学术练习。