It's almost impossible to be in poverty in the United States unless you're willfully trying to do so. It's certainly impossible to starve. There are free food programs in every city.
Comments like these are usually driven from ideological places or jealousy, rather than a factual linking of billionaires to poverty. Any given US billionaire is likely providing over 1,000,000 direct and indirect jobs for starters.
Look at evil Jeff Bezos, who created a platform in which basic necessities are sold for margins that are frequently 0%. Previously 'local business' middlemen would charge 50% margins to impoverished locals. Undoubtedly Amazon has lowered the prices of goods. That's merely one example.