Each autumn, Forbes holds up a mirror to American capitalism, and the 2026 reflection shows a familiar face with new features. Greg Brockman, co-founder of OpenAI, enters the list as its wealthiest newcomer at $25.5 billion — a figure that speaks less to individual genius than to the extraordinary concentration of reward in the artificial intelligence era. Wealth, as ever, is not evenly scattered but gathered in clusters: in coastal tech corridors, in Arkansas retail dynasties, in St. Louis boardrooms, and among founders young enough to have grown up with the internet. The list changes year to