Mrs Fox has worked in nursing homes most of her working life, and when they were short of carers they would use agency nurses or self employed nurses who were paid twice as much as the regular staff. And because it was a nursing home they had to have qualified staff.
That sounds interesting Bruce except for the fact that humans come with baggage…and lots of it…Everyone wants a house and car, they need to be kept at a reasonable temperature to survive, they need oxygen, food and water…They need to be able to work or exercise…
If there are problems with over population it has nothing to do with the space a human body takes up stacked end to end.