When I lived for a year in a small apartment in Paris after decades in suburbia, I was amazed by the amount of "stuff" I didn't actually need. So much space and apparatus was required to maintain the house and grounds that was all unnecessary in a 20-story apartment where these things were taken care of, surrounded by businesses providing great goods and services.
However, occasionally I did have to place an urgent call to the house-sitter to look for something; a document usually. Other times I went out and bought a duplicate of a tool or a book I knew was sitting at home. Like businesses, individuals would be happy living in much smaller spaces if they could store a fair volume of personal items in warehouses someplace in the metropolitan area, browseable with digital video etc. and shipped to them on demand in minutes by SkyTranFreightDelivery.