While some of the richest are certainly entrepreneurs, the largest percentage of Forbes 400 are people who got there with OPM, other people's money, like hedge fund managers. Another chunk are heirs like Waltons or Kochs. Did Waltons get something for nothing without any risk? I would say yes, they did.
https://en.wikipedia.org/wiki/Sam_Walton
More accurately he made something from nothing.
You and anyone else could have made a little something, too, if you'd bought Walmart stock. Lots of people did.
Also, you could be a millionaire by retirement if you adhered to a regular investment program rather than only one investment of $1,000.
Also, the Walton kids most assuredly got something for nothing.
But you do.
> the Walton kids most assuredly got something for nothing.
85% of American millionaires are self-made. See "The Millionaire Next Door" by Stanley.