Farmers depend on local businesses and services to stay in business.
They need veterinarians, suppliers, and others in order to do their work. A larger farm will add to the infrastructure that makes it profitable for the supporting industries to stay in an area. The best example is the availability of large animal veterinarians. There must be enough large animals within a given geographic area to support a veterinary practice. As the number of small dairy herds decline, it becomes increasingly difficult for veterinary practices to justify remaining in the area.