Gates identifies a quiet revolution in what leadership actually means—not command, but distribution of authority. Where earlier generations of executives hoarded information and decision-making power, he's suggesting that the coming century would belong to those willing to make themselves somewhat dispensable, to train others into capability. You see this most clearly in how successful startups now scale: a founder who insists on approving every hire or feature becomes a bottleneck, while one who builds systems and trusts people to own their domains grows exponentially. The harder part—the part most leaders still struggle with—is resisting the ego investment in being indispensable.