It's an alpha male thing: what dominant chimpanzees and Donald Trump have in common

[Orsino]

5. It's bluffing.

Ape chest-beating is a display of the symbols of toughness used to discourage challenges.

Trump doesn't know what he's doing, doesn't understand his businesses, and doesn't get along well with others. Every time he opens his stupid face-hole, he is bluffing, counting on the illusion of his wealth to forestall questioning. This served him well for decades and let him pretend to be a smart businessman on TV, but it left him unprepared for the sort of scrutiny a president faces.

This world probably does seem unfair to him. No one ever told him he'd have to work for what he wanted.