What is the optimal distribution of wealth?
Well, you have free-market economies, which generally prosper, and everything else, which generally results in widespread poverty and death for those upon whom it is forced.
As to your assertion that the free-market does not exist, I can only sigh.
Some free market emerges, market gets so big it attracts criminals and tricksters, market gets hijacked by clever manipulation, not by providing best product to where its needed, public outcry for regulations. Rince, repeat.
That is why markets can only be relatively free. They will always start to abuse their freedom and so we get these regulations.
If purely free markets were possible then everyone would do that instead, right?
Markets get hijacked by states. Most regulations are there to promote and/or preserve monopolies.
Just so we're clear on one thing, Zeitgeist is basically just Communism re-dressed with new-age lingo.