From the literature, Amazon contracts out it's warehouse duties to fulfillment companies. I'd be interested if anyone knew if Amazon had any direct employees (other than Sr. Management) that worked in the warehouses.
Huh. What about call centers? Thinking of it that way, the whole thing starts to make a little more sense. It is /hard/ to run a good low-end support organization, and it's one of those rare situations where attitude matters to the point where you want to get rid of the bad attitudes even if they are otherwise competent.