Paul Piff, a psychologist at the University of California at Irvine, did a study where Monopoly players were divided randomly by flipping a coin into rich and poor players.
The rich players were given two-times as much money as the poor players, the rich players got to roll both dice instead of one; therefore, the rich players got to move around the board a lot quicker, and when they passed GO, they collected $200 while the poor and slower players only collected $100.
Consequently, the rich players became more dominant, significantly ruder (e.g., The rich players belittled the poor players.), the rich players were less compassionate, and despite their initial advantage in the game, the rich players acted as if they deserved to win (i.e., The rich players didn't acknowledge that they had a significant advantage in the game.)
Piff related Capital in the Twenty-First Century (2019):
"When you watch patterns of human interactions, people who feel entitled and deserving of their own success, are more willing to privilege their own interests above the interests of other people and often engage in ways that undermines other people's welfare; so, that they can get ahead."
"We translate perceptions and experiences of being better off than others - materially, to being better than others."