Most of the wealth is held by the Federal government and State governments in landownings, much of it free or very low cost for (almost) anyone in the world to enjoy.

The internet itself was developed, in part, with US taxpayer money and (some public) universities and is now basically free to access for anyone in the world.

Pension funds and insurance companies are two of the biggest owners of stocks, they provide funds for regular citizens who pay into them over a lifetime.

The fact is a wealth is a lot more widespread then most people realize, if you pay into a pension over a lifetime, then you'll get back more if you are lucky enough to live long enough to do so. If there is any skewing of wealth in any real way, it's the old have a lot of it, and this is true in every country.

A lot of people come to the US to make their fortune because wherever they came from isn't conducive. I suppose that creates a lot of jealousy, but it won't create the next Google or Tesla.