> The best managers I've ever had throughout my career were the ones who knew their own limitations and acted accordingly.

I agree with the conclusions and overall thinking. I would however regard the example as an exception rather than the rule. Furthermore I think the creative industry has some peculiarities of its own (ie. most people would do creative work or hobbies without being paid, Justice as a rewarding activity). My point is that in a company or startups the intrinsic motivations might be very different.