John D. Rockefeller, Andrew Carnegie, J. P. Morgan, Cornelius Vanderbilt, and the other robber barons of the Gilded Age have a hearty chuckle and say hi.
The problem is not wealth. The problem is not producing massive value and capturing a portion of it.
The problem is thinking that the system-level goal of capitalism is to extract wealth rather than to produce it and distribute it. Of the men you listed, only Vanderbilt supports your argument.
But Capitalism isn't synonymous with the free market, or any other market configuration, and it's totally possible for the people who control the means of production and distribution to... not produce or distribute. In fact, that may be advantageous in their efforts to secure more capital.
Ultimately, "they" really always have been greedy villains. Shareholder supremacy just made it worse.