A new book, “Winners Take All,” argues that philanthro-capitalism fails to address one thing: The system that created the situations that philanthropists are trying to fix. When journalist Anand Giridharadas became a Henry Crown fellow at the Aspen Institute several years ago, he was initially excited to rub elbows with about 20 of the world’s emerging philanthropy-minded capitalists. These were successful entrepreneurs ostensibly interested in using their wealth and knowledge to build a better world.