Here's an article with links to other resources indicating that sociopathic/psycopathic behavior has a higher prevalence in people who we generally consider "successful" or to have "got ahead" (e.g. CEOs): http://www.cnbc.com/2016/11/18/why-psychopaths-are-so-good-a...

Note: I'm not claiming the article is "proof" of the contention, just that it indicates support for the parent's assertion. Other items may counter the assertion, of course.