Robots are expensive and need to be taken care of and repairements. It will longer before you get your investments back let alone generated an income and made profit. Any idea how much a new battery or those chips will cost?
Electricity will be put on a hold because all those datacenter need it and we the people are the last one in row. No way every delivery business can afford buying them. The lazy ones better go out and pick it up themselves.

Perhaps they make good police officers and are not afraid to shoot criminals, rapists and murder s.