Last week, DreamWorks Animation co-founder David Geffen (# 185 on the global Forbes list, $ 8 billion) was criticized for posting on his Instagram page about self-isolation on a mega-yacht worth $ 590 million. The 77-year-old billionaire is in the Caribbean on one of the largest private ships on the planet, the 135-meter yacht Rising Sun, which has 82 cabins, a cinema, a wine cellar, a gym, and a spa area with a Jacuzzi (easily converted into a medical center), as well as a basketball court that acts as a helicopter...