Jeff Bezos looks on from the sidlines before kickoff between the Kansas City Chiefs and Los Angeles Chargers at GEHA Field at Arrowhead Stadium on September 15, 2022 in Kansas City, Missouri. The Amazon founder and chairman is one of the world's richest men.Cooper Neill | Getty Images Sport | Getty ImagesThe world's five richest men have more than doubled their vast wealth since 2020, according to an Oxfam report, as the charity calls for curbs on "corporate power."The report found that the comb...