The point is that privileged people tend to think that they are where they are because of their amazing intelligence and clever minds, when luck and dozens of other factors are really much of the reason for their success. They won what Warren Buffett calls "The Ovarian Lottery", as he did. And this goes far beyond just rich parents.
Eventually many people with just one talent, like selling stuff, putting a ball through a hoop or hitting a ball with a stick, come to think that they are actually WORTH what they are paid to do, and entitled to keep it all, because, they think, all the rest of the people are just talentless drudges and unworthy.
Ronald Reagan was clearly lucky to have been born precisely when broadcasting baseball on the radio became a part of society. He developed his speaking skills and was luckily the right height and had the right look to make it as an actor. Then GE was convicted with price fixing and some of the execs were actually sent to prison. GE desperately needed someone to improve their shitty image, like "The Old Ranger", and he learned how to give The Speech. He did not write The Speech, GE wrote it, but he gave it so many many times he actually came to believe his own fetid bullshit.
Had he been born 20 years earlier or later, he would perhaps made it to be president of his local Lion's Club. He was just in precisely the right place at the right time.