[throwaway316943]

Sounds like the concept of squatter’s rights. How do I prevent others from “using” my property and preventing or impinging on my use of it? What happens if I build a home and go on vacation only to come back and find someone living in it? Why would anyone have incentive to invest their time into new construction? Would people bother to maintain the property they are using or would they just pack up and leave once they had sufficiently trashed it? How does this use concept apply to food as mentioned in the quote? Private property solves all of these so any alternative must also provide workable solutions.