There are also diminishing returns to scale. All workers get the most generous contract and work rules, for example, and redundant positions are rarely eliminated. It's also a lot harder to manage an organization serving 6 million people than one serving a few hundred thousand. That's why I suggested those areas where regional co-operation really makes sense and there are real economies of scale, like planning, water and sewage, waste management, and social services. I don't think we need an even bigger police department, for example.