If I pay you to bring me a package from <somewhere else>, all is well. If 10 other people pay you to bring them packages from <somewhere else>, all is well. If

If I pay you to bring me a package from <somewhere else>, all is well. If 10 other people pay you to bring them packages from <somewhere else>, all is well. If 100 want to pay you to bring them packages from <somewhere else> and you suddenly don't have enough manpower to deliver those packages... do you suddenly start charging <somewhere else> because they have too many people that want packages? No, because that would be ridiculous.