:It looks like you're conflating coercion with exploitation. In the case that someone needed food to such a degree that he was going to die if he did not get it, and you asked that he sell you everything he owns in order for you to give it to him and there was no other food to be found, you haven't coerced him but exploited him. The hungry individual is free to starve and die you're not forcing him to purchase your food you aren't going to shoot him if he doesn't purchase. But, most would say, you are taking undue advantage of his desperation. There is a difference between coercion and exploitation.