Scott Galloway on Breaking Up Tech's Big Four

Apple, Google, Facebook and Amazon control huge swathes of our online lives. That's why we need to seriously consider breaking them up, according to NYU marketing professor Scott Galloway. In his new book, The Four, Galloway makes the case that these original disruptors have come to form an oligopoly—one that is stifling innovation. He says we need a radical new approach to regulating the big four.