The BIG plus about wealthy people is that they have a BIGGER interest in keeping the world's economics more stable and working properly. So the rest of us have jobs, food etc.
Maybe the envy that many feel is worth that. A small price to pay.
That would be true provided they benefited from stability. With incredible amounts of wealth, (localized) instability isn't an issue and as any trader should know, it is possible to profit further from volatility.