Why isn't everyone farming like this?

What happens here

This video provides an overview of the integrated, sustainable, and efficient farming systems implemented at Polyface Farm in Virginia. It showcases various rotational grazing techniques for different livestock (broiler chickens, sheep, pigs, and layer hens) and cattle, emphasizing soil building, natural pest control, predator management, and efficient water distribution without the reliance on traditional tillage or chemical fertilizers. The instructions detail the practical implementation and management of these systems.