You have no idea what you're talking about. Towns in the boonies don't fund themselves the same way as cities, nor do they provide the same level of public utilities and services. Many small towns only provide electrical service and basic copper phone service--no water, sewer, high-speed internet, etc.
> Longer roads, longer sidewalks, longer water and sewer pipes.
Digging a trench for that new pipe out in boonies over a dirt field can be done in an afternoon by one guy with a backhoe. Putting in the same length of pipe underground in Manhattan will probably take a decade and astronomical amount of money.