Doing everything right can still get a great company killed

Clayton Christensen showed that dominant firms fail not from sloppiness but from listening too closely to their best customers, who never ask for the cheap, crude technology quietly improving underneath them. By the time it's good enough, the upstart owns the market. He called it disruptive innovation, and The Economist named it the era's most influential business idea.

— Clayton M. Christensen, The Innovator's Dilemma — 1997
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