Jeff Bezos is the world’s richest person. Amazon is on a tear—sales grew 43% last quarter—and may soon pass Apple as the world’s most valuable company. Amazon has ruptured retail, floated in the cloud, and even made superhero TV shows like “The Tick.” But what makes Mr. Bezos tick?
Sure, he sells everything from books to the TubShroom drain protector/hair catcher. That’s why Amazon owns close to half the American e-commerce market. And its 100 million Prime customers will shrug off the recently announced 20% fee hike. But...