Getting turfed from Apple was the best thing that happened to Steve Jobs. If you read the folklore, he was bit of an enfant terrible, and I'm of the view that the experience of running NeXT and Pixar gave him the insight to turn around Apple.
I'm not nearly convinced that Apple would be the same company it is today if Steve Jobs had not been forced out.
Your statement and my statement are not mutually exclusive.
The same goes with education. Those who have one can overvalue it. Those who don't have one can undervalue it.
I do wonder how Apple would have turned out if Spindler didn't become CEO. That's when things really started to go downhill.
Then they are doing it wrong. The single most valuable thing I've learned from experience is where I'm most likely to fail.