While the rest of the U.S. economy languished earlier this year, the tech industry’s biggest companies seemed immune to the downturn, surging as the country worked, learned and shopped from home. On Thursday, as the economy is showing signs of improvement, Amazon, Apple, Alphabet and Facebook reported profits that highlighted how a recovery may provide another catalyst to help them generate a level of wealth that hasn’t been seen in a single industry in generations. With an entrenched audience of users and the financial resources to press their leads in areas like cloud computing, e-commerce and digital advertising, the companies demonstrated again that economic malaise, upstart competitors and feisty antitrust regulators have had little effect on their bottom line. Combined, the four companies reported a quarterly net profit of $38 billion. Amazon reported record sales, and an almost 200% rise in profits, as the pandemic accelerated the transition to online shopping. Despite a boyc
