That's how human psychology works.

It was found that super-rich individuals legitimise their wealth acquisition and spending by presenting themselves as psychologically superior to the less affluent and as a result, deserving of their extreme wealth. By drawing upon meritocratic ideology, individuals managed their moral identity as their wealth and consumption is warranted as earned

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Higher social class predicts increased unethical behavior

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And in our society, wealth is what matters the most. This in contrast with older (smaller) societies where status is derived from generousity.

They're stereotypes for a reason.

It’s more like, when they watched those movies, they kind of got inspired by the villains and thought the negative portrayal was the fictional part.

They have always been waiting for the opportunity to do villain stuff and do it as long as they can get away with it (like doing a certain salute).