Interested in why you use the word "ambitious" there. Woz most likely wanted to remain in engineering. That was (and is) his love and his ambition. Senior management probably didn't interest him in the slightest.
I don't know if you've heard about the Empathizing–Systemizing theory (http://en.wikipedia.org/wiki/Empathizing%E2%80%93systemizing...) which was originally developed to explain autism, but basically engineers typically have very strong systemizing traits. Surprisingly, this also makes them good at certain aspects of high-level planning. I suspect that the current CEO Tim Cook has an excellent systemizing (as well as negotiating) mind, which would partly explain his great deeds in the supply chain operations.
Some people would argue that it was Wozniak's engineering mind that made him not want to pursue management. I would argue that the engineering mind is actually quite useful in management and that a lot of business leaders possess it (think Bill Gates). My hypothesis is that if Wozniak became as ambitious and controlling as Jobs was after the two met, the pair either would have fallen apart violently at some point or would have created an empire the size of Microsoft early on.
Some people would argue that it was Wozniak's engineering mind that made him not want to pursue management. I would argue that the engineering mind is actually quite useful in management and that a lot of business leaders possess it (think Bill Gates). My hypothesis is that if Wozniak became as ambitious and controlling as Jobs was after the two met, the pair either would have fallen apart violently at some point or would have created an empire the size of Microsoft early on.