Across cultures, people often wrestle with whether having lots of money is a blessing, a burden or a moral problem. According to our new research, how someone views billionaires isn’t just about economics. Judgment also hinges on certain cultural and moral instincts, which helps explain why opinions about wealth are so polarized.

The study, which my colleague Mohammad Atari and I published in the research journal PNAS Nexus in June 2025, examined survey data from more than 4,300 people across 20 countries. We found that while most people around the world do not strongly condemn having “too much money,” there are striking cultural differences.

In wealthy, more economically equal countries such as Switzerland and Belgium, people were more likely to say that having too much money is immoral

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