Running a car company has to feel a little dull once you’ve become one of the richest people on the planet. But your wealth gives you options. You could buy a media platform, for instance, where you might bully a marginalized group or forge new friendships with fringe characters. Sharing half-baked views on international affairs works, too; when you’re this rich, even your most reprehensible takes get serious attention. But be warned: All of this might be fun for you, but it could spell disaster for the car company that generated your riches in the first place. Advertisement I’m talking,...