Most of us are living in democratic societies, where city majors are elected by people by the majority of votes. Thus, they have to defend the interests of majority in order to be re-elected.
I want to give several examples of possible market failures in cities. In economic sense, this means that free markets may fail, .i.e., do not provide the socially efficient allocation. The first ideas coming to my mind are as follows: a) monopoly power in distribution of utilities (at least the physical network is unique, and the price of provision of gas, electricity and water is often above the cost), b) too much reconstruction of houses and repair of roads (in some cities of developed countries), that brings too much pollution and create bottlenecks in traffic. Since we have possibility of a monopoly and externality, market equilibrium is not efficient, and thus there should be smart regulation. However, it is very easy to give a bribe to responsible people or even to hide those effects from public. There might be a lobby of firms doing repair to overuse public money above public interest.
I have two questions: 1) how this governance is efficient in the cities that you know? (please, give both positive and negative examples), 2) do you know other examples of market failures in cities.