I agree with the author that there is too much data but the conclusion is very accurate. Great leaders can evolve as the company evolves and smoothly move from

I agree with the author that there is too much data but the conclusion is very accurate. Great leaders can evolve as the company evolves and smoothly move from being an individual contributor to a manager/delegator. If you want to grow a big company you have to learn both and more importantly learn when to make the transition.