Are today’s Big Tech superstars successful and popular because they’re the best at what they do, or because they’ve become so powerful that they can coast on past successes? SHIRA OVIDE looks into this. For a decade or so, Microsoft botched so many significant technology trends that the company became a punchline. But Microsoft more than survived its epic mistakes. Today, it is (again) one of the tech world’s superstars. Microsoft’s ability to thrive despite doing almost everything wrong might be a heartening saga about corporate reinvention. Or it may...