What's to keep an online order to Amazon going directly to a warehouse robot that immediately boxes up your order, prints a shipping label, attaches it to a box that's 5x too big for the item and puts it in a shipping bin for pick up? Nothing except the cost of a robot and someone to program it.
Amazon is building a new warehouse here. I expect there will be some robots working there when it's up and running.
The fact is Amazon can't find enough people to work for $15/hr. Neither can the US Postal Service. My mail has gone from a 1:30 delivery to a 3:30 delivery. If it gets much later I'll be walking the 1000' to mail box in the dark this winter. The post office has signs out front that say they're hiring. Those signs have been there for months.
The work force is obviously shrinking because people just don't want to work for $15/hr. and have to be vaccinated. I'm not sure how they'll pay for rent and food, which keeps going up. Maybe they won't. The only alternative I can see is more unsheltered and hungry people digging through dumpsters.