Here's a little test. Stand on the corner and watch people walk or drive by. Then, based on their appearances, identify which persons are wealthy. Years ago, it wouldn't have been that hard. I can rent a Rolls or a yacht for a day, half-day or an hour.
Capitalism is relatively new in human history.
Prior to capitalism, the way people amassed great wealth was by looting, plundering and enslaving their fellow man. Capitalism made it possible to become wealthy by serving your fellow man. Capitalists seek to find what people want and produce and market it as efficiently as possible. They've already saved lives and made us healthier. Despite the miracles of capitalism, it doesn't do well in popularity polls.