Not exactly accurate. The railroad, steel, oil and other titans of the 19th and early 20th century were richer in comparison to Gates or Zuckerberg or any of them today. I don't google like some but I believe it was Cornelius Vanderbilt who would be worth a trillion dollars today, or something. They had NO taxes and only gave their money back after they had everything they wanted...sort of like Gate, Buffett etc all are doing now. I will point out unregulated capitalism can be as bad as socialism. Adam Smith, Hayek and the others great thinkers always recognized that good regulation was a necessary component of capitalism. Today we have poor regulation; too lax in some areas and too tight in others. We're morphing into a crony capitalist economy which is no more viable than socialism. In some ways it's socialism in disguise. Our tax structure is messed up as well. We need a complete revamp of both. It was one thing Trump spoke to but has provided no evidence that he has intent or capacity to do anything.
More evidence that capitalism has lifted all boats like a rising tide. It is the ONLY economic/social system to do so http://humanprogress.org/blog/dont-demonize-capitalism-its-making-the-world-a-better-place
