I'm talking about the process of turning sunlight into food. If you want to make that process use as few resources as possible (especially fossil fuels) then you need big fields with large machinery. Distribution of wealth is a different topic.
You incorrectly inferred my meaning from my original post and are now doubling down, I'm not sure why.
It's as simple as this: We want to produce as much food as possible from as few natural resources as possible, emitting as little carbon as possible in the process. Large fields are more efficient at this, for reasons I've spelt out already.
Even in a fully communist society this would be true.