Bob Marley’s life finally hits the big screen this week in the form of Bob Marley: One Love. In his 36 years, Marley lived a life so rich and tumultuous, not all of it can be distilled into a biopic.

War, pandemic and sluggish markets hit the world’s billionaires this year. There are 2,668 of them on Forbes’ 36th-annual ranking of the planet’s richest people—87 fewer than a year ago. They’re worth ...