Comment by atoav

I worked in the shipping department of an online store as a side job during my studies, so I know a bit or two about this.

The issue is that management of all shipping companies is expected to run their services 100% resource-efficiently and without any slack (wasted money). The problem is that the only way to do that you are essentially constantly above capacity.

I had certain services where literally every second month a new unfortunate subcontractor with yet another beaten up white van would show up. Needless to say their service quality was absolutely shit, since those subcontractors didn't even get a chance to learn how to do the job properly.

Extracting as much money as possible from shipping isn't the same as providing a good service. Reliable service needs redundancy and underutilized capacity. If your laptops CPU was constantly at 150% load you wouldn't say "Great I am not wasting resources", you would get a beefier CPU that gives you enough headroom for your daily tasks.