There is no difference between the market forces that determine prices and the market forces that determine tax rates. If the people who control the marketplace pick the pockets of a sufficient number of citizens int heir pursuit of wealth, those citizens will at some point reach a critical mass capable of picking those wealthy pockets in their pursuit of the general welfare.

It's a natural system of checks and balances.

Steve
Give us the wisdom to teach our children to love,
to respect and be kind to one another,
so that we may grow with peace in mind.
(Native American prayer)