"I think you have it exactly backwards. The more points of attack, the larger the vulnerability. There are laws passed for specific corporations to reduce tax liability. What's wrong with low density? There is a real economic value to variety and a minimum density to support certain kinds of commerce. You can't take this to a limit assuming there is no cost (if only opportunity cost) to moving to a less dense area. Also, at least in the easy coast, the least dense areas are typically already state or national parks. Wyoming is the exact opposite. 5 digit license plates are common there." - Ivan Kirigin