Homeless people also exist in non-capitalist economies so I’m not certain that is evidence of anything.
Scarcity is the problem, not capitalism.
Scarcity is the problem, not capitalism.
Attention and logistics. The cost of getting things where they need to go, the administration of an empire, frequently dwarves by orders of magnitude the cost of the materials being transported to and fro. The problem is not solved by localisation given the increased exposure to volatility that brings.