While it's fair to point out so many of the similarities between the people at the top and the bottom ... there are also differences. Notably, Musk is an outlier in many ways. The vast, vast majority of CEO's are highly conscientious at least in civil terms. They are 'restrained' if anything.
Again, even if they have some qualities that make them different in order to achieve big things, I would expect a Gauss curve to represent most traits distribution at the top like at the bottom. While most people show restrain, a few will be exhuberant, no matter the sample.
