I agree that going for wages in the traditional sense doesn’t catch many of the most relevant income streams. However, I think that a “maximum wage” makes sense as a theoretical construct used to create a sensible income tax scheme.

Essentially, tax brackets and rates could be defined in relation to the median income. Go too far above that (hitting the “maximum wage”) and your tax rate rapidly increases, maybe even going as high as 90%. Of course this would have to cover all sorts of income, not just plain money.

This scheme would effectively box people into a certain band of acceptable wealth and would create an incentive to raise wages – after all, if the average worker makes more, so can the most wealthy.

(Also, full agreement on needing to talk about better labor protections. American labor law is really lax.)