S&P 500 firm lifespan fell from 61 to 15 years — competitive advantage matters more than ever
RogerLMartin · x · 2026-11-10
Responding to Scott Witt's point that S&P 500 company lifespans have shrunk from 61 to 15 years, Roger Martin argues this is the opposite of 'the end of competitive advantage.' In 1958 firms could survive half a century without one; today AI startups pressure incumbents faster than ever, making building and continuously upgrading competitive advantage the top priority for 2026.
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