I would say this is true of almost any position. Ask any manager and they will probably say this is usually how it shakes out. 33 percent of hires are A players

I would say this is true of almost any position. Ask any manager and they will probably say this is usually how it shakes out. 33 percent of hires are A players, 33 percent are B players, and 33 percent are C/D/F players. It is grading on the curve. An A player at one company might be a B player at another. If someone is an excellent CxO they are probably a good candidate for a bigger and better company or the CEO job somewhere else and so will leave after some time unless given large incentive to stay or otherwise have reached their career ambitions.