Sorry to take only a small part of an otherwise great comment but is this actually true? It seems to me that there is a great many fields in which consistency is more important than excellence, especially if the striving for excellence produces great misses as well sometimes. In a well-designed system with some allowed tolerance, as long as it's good enough you are fine. Take the electricity grid for example: There's no prizes for maintaining the frequency to within a nano-Hertz of the spec. There are very large fines for being outside the spec (+/-0.050 Hertz for the EU grid). Being consistently within spec is much more valuable than occasionally performing much better than the spec.

It is only in extreme winner-takes-all fields like sports, spacefaring and entrepreneuring that being the absolute best is what you want. In most other fields being consistently decent beats out varying excellence. I definitely wouldn't want my dentist to take a risky moonshot in pursuit of excellence, for example.