The Medici Didn't Lose Their Bank to Bad Luck. They Engineered Its Failure Through a Structural Flaw Silicon Valley Is Repeating Right Now.
For nearly a century, the Medici Bank was the most sophisticated financial institution in the Western world — a lender to popes and kings, a pioneer of double-entry bookkeeping, and a model of commercial innovation that would not be matched for generations. It also destroyed itself, gradually and then all at once, through a management structure that prioritized the autonomy of branch managers over accountability to the institution. The specific failure mechanism has a name in modern economics. It also has a very contemporary address.
Mar 13, 2026