I brought one big question with me to Harvard. Why do smart companies fail?

From my first year on the faculty, there was always so much more I wanted to impart to the students. I decided that, rather than waste the last day of class summarizing the semester, I'd spend my time talking about what I'd learned in life that was useful.

Smart companies fail because they do everything right. They cater to high-profit-margin customers and ignore the low end of the market, where disruptive innovations emerge from.

Clayton M. Christensen Quotes