Bill Gates and Elon Musk don’t exactly see eye to eye. While the Microsoft billionaire and the Tesla and SpaceX titan have never seemed to have a particularly cosy relationship, things have heated up over the past few years as the two have openly sparred about everything from electric vehicles to the pandemic. The two moguls are among the world’s wealthiest, with Musk in first place and Gates in fourth, behind Amazon CEO Jeff Bezos and LVMH chairman Bernard Arnault. While their public spats may not always be serious, they do appear to fundamentally disagree on how to fight disease;...