When it comes to saying goodbye, a divorce among the ultrarich can be as outsized as the rest of their lives. Jeff Bezos, the Amazon founder who has become the world’s wealthiest person, may be the next to find this out: He announced plans to divorce longtime wife Mackenzie yesterday, and in the end she could walk away with tens of billions of dollars, which would represent the largest divorce settlement in history by far. But the Bezoses are hardly the first moneyed couple not to last until death did them part