If they Make Billionaires Pay Higher Taxes, won't the Billionaires just make Customers Pay More?

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Now, I immediately see something I'm getting "wrong" about that; the quantity being taxed is not 'Billionaires-Wages,' but their Wealth (i.e. not 'the money they get from their company's sale of products-&-services every so-often,' but 'the money they get from "having been born to people who had money & who taught them how the money grows into more money through loans' usury/interest/etc."') But I worry. The question that incites my worry: "Do you think the billionaires are going to lower their 'standard-of-living' even ONE IOTA because of this tax?" I don't think they're gonna have to; and--if the tax DOES start eating into their standard-of-living--they'll make it up by charging 'the 99%' with higher prices! Or do you think they'll lower their living-standards for the good of the economy?