Nothing inherent to economies of scale is devastating our environment. Companion planting, soil stewardship and water management each benefit from scale.
Edit: and if you think not just on the ecological side.
The core benefice of scale is to produce more while requiring less people. Which mean lower density of people which has so many societal impacts ...
> so far in agriculture, economies of scale have been let loose without much governing for ecology
Sure. But scale isn't the problem. (Focussing on its is counterproductive. Amidst falling efficiency, no population will choose long-term ecological impact over short-term food availability.)
Solve the problem directly: incentivize land owners to steward their land. Regulate where needed. Improve agricultural education.
Nothing inherent to economies of scale is devastating our environment. Companion planting, soil stewardship and water management each benefit from scale.