Certainly high interest rates will exert downward pressure on prices of those goods which are purchased on credit. However, interest rates are high in inflationary environments (like the US in the 70s). Although salaries lag inflation, they eventually catch up. I know this isn’t a pleasant thought but it may occur, especially since the US is so dependent on capital inflow from foreign countries. If they want to keep selling t-bills, they won’t be able to keep rates low forever.