The businesses of the biggest tech companies are like fortresses, flanked by high walls and encircled by moats. Their platforms are cornerstones of digital life that support billions of users. At the same time, their business ecosystems, the networks of partners and tech allies that circle in their orbit, make them hard to unseat. Since the pandemic, the profits and growth of Big Tech have lifted the entire US stock market.
大型科技公司的业务就像堡垒，四周是高墙并环绕着护城河。它们的平台是数字生活的基石，为数十亿用户提供服务。与此同时，它们的商业生态系统、合作伙伴网络以及围绕它们运转的技术盟友，使它们难以被取代。自新冠疫情以来，大型科技公司的利润和增长提振了整个美国股市。
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