Um... do a little more studying about Narcissistic Personality Disorder. People with NPD are rarely successful, precisely because they are so consumed with their own sense of greatness that they have utterly no sense of empathy.
Without a sense of empathy, one cannot succeed in business. One succeeds by understanding that you don’t get ahead by trampling other people, but by making mutually acceptable deals. How do you negotiate if you have no empathy—if you cannot tell when the other person is about to walk away, or is becoming genuinely interested in a solution?
You cannot claim that Trump is not successful, or that he has not already demonstrated the executive skills that the office of the president desperately needs. All you can do is get all emotional over the fact that a non-establishment type might come in and upset the status-quo.
The opposite is true. Here some references: