It’s so great — truly heartwarming — to see billionaires devoting their deepest thoughts to finding solutions for eradicating poverty. For example, I can’t begin to tell you how grateful America’s homeless people are going to be once they hear about Andy Kessler, who has been thinking long and hard about their plight. Kessler is a former hedge-fund whiz, which means he was in the business of making…well, money.