Economies of scale saves resources and makes things cheaper. For the producer. Meaning more profit.
What they don't tell you is it does the same thing on the consumer side as well, collective ownership means buying less things.
The market price (if there is a market) is set by ... the market. The producer surplus is the gap from their cost to the market price.
The best way to lower the market price is competition.
Ideally that would be true on the consumer side. If "resource clubs" were a thing, and each person could be competed over things would be better. Group action > Individual action. Many groups > fewer groups.
A bunch of technomancers in the fediverse. Keep it fairly clean please. This arcology is for all who wash up upon it's digital shore.