It's a real enigma why people are so averse to real free market capitalism even now. Here we are, in the century that has seen Lenin, Stalin, Mao, Hitler, Castro, Pol Pot-and we're still being warned against the 'robber barons' of the 19th century. I don't know that Jay Gould or John D. Rockefeller ever killed anyone. The State has killed countless people, and yet we're always supposed to remain on guard against these 'greedy villains' of yesteryear.
The extraordinary genius of John D. Rockefeller and Andrew Carnegie 100 years ago was their recognition that the great wealth they had amassed could be put to public good and used to solve the complex problems for which there were no other sources of capital.