Crime problems largely result from opportunities, temptations, and provocations that have been provided to offenders unintentionally by those pursuing other private interests. There is a widespread notion that the state and its agencies can and ought to take full responsibility for crime control and that there is, therefore, nothing that nonstate actors can or need to do. In practice, there is little that the state can do directly to address the opportunities, temptations, and provocations for crime; but where crime control responsibilities have been accepted in the private sector, successful measures to reduce opportunities and temptations have been devised and adopted, preventing many crimes and reducing costs that would otherwise fall on the state as well as on victims. This article sets out the reasons why a shift in responsibility for crime prevention from the public to private sector can produce patterns of crime control that are both effective and socially desirable, albeit important roles remain for the public sector in stimulating and supporting such measures.