What if while you were eating a cheeseburger, McDonald’s was magically replenishing that burger so that no matter how much you kept eating there was still some left. Moreover you had little control over the ratios of fat and sugar used to replenish it and they earned more the longer you spent eating it. Would you consider them harming you if they were prioritising stuffing it with ingredients that maximised the amount you ate and ignored sensible limits on sugar and fat?