Relative to the taxi industry, Uber is a sustaining innovation; that is, it makes customers' lives better. Uber targeted mainstream markets with a better service for existing customers, and it succeeded in serving them better than the incumbents.

I felt that I could look back on my life and think about lots of folks that I helped become better folks. And I've tried to be as good a man as I could be.

Disruption is a process, not an event, and innovations can only be disruptive relative to something else.

Clayton M. Christensen Quotes