Federalism: Competition Among Governments
For much the same reason, competition among governments leads to better governance. In choosing where to live, people can compare public services and taxes. They are attracted to towns that use tax dollars wisely. Competition keeps town managers alert. It prevents governments from exerting substantial monopoly power over residents. If people feel that their taxes exceed the value of their public services, they can go elsewhere. They can, as economists put it, vote with their feet.