c) doesn&#x27;t work, because the companies don&#x27;t want to carry the costs associated with it.<p>If you&#x27;ve ever been to a customer service center (or whatever they call them) at UPS or FedEx, you&#x27;ll know what I&#x27;m talking about. Long lines for the single desk manned by someone who clearly does not want to be doing that job and shows it by every interaction with customers.<p>Also the important point is that the people who the packages are delivered to aren&#x27;t the customers. The companies that ship the packages are. So unsurprisingly the carriers don&#x27;t really give all that much of a shit about how you feel about their service. Unless a really egregious customer service failure goes viral for some reason.