Decades of research in developmental psychology have shown that moral reasoning develops through consequences—not punishment, necessarily, but experiencing the effects of your actions on others, receiving honest feedback, having to accommodate reality as it actually is rather than as you wish it to be. It’s not that the wealthy become evil; it’s that their environment stops teaching them the things that nonwealthy people are forced to learn simply by living in a world that pushes back. When you can buy your way out of any mistake, when you can fire anyone who disagrees with you, when your social circle consists entirely of people who need something from you, the basic mechanism by which humans learn that other people are real goes dark.