A decade ago, the greed and carelessness of the financial industry dealt a serious blow to the global economy when financial products no one but their creators understood, imploded. The resulting economic collapse unleashed a wave of financial regulatory reform worldwide. Now the tech industry — while making some things more convenient, has made serious mistakes of its own. It has abused privacy, squeezed the competition, undermined quality journalism, casually spread hate (e.g. the recent New Zealand shootings) and allowed foreign countries to influence elections. And that’s just the beginning of the list. As a result, Google, Facebook, Amazon and Apple appear to be...