民营机构在生产公共物品和提供公共服务方面，正发挥越来越重要的作用，这些物品和服务以往因其是“公共”的，而被认为是政府的专责。今天，公私机构间的伙伴关系(PPP)在全球广泛采用，以发展能源和市政管网，扩展通信与交通体系，建设和运营供水、污水和废弃物的处理设施，并 Private-sector organizations are playing an increasingly important role in the production of public goods and in the provision of public services which, in the past, were considered government-specific because they were “public”. Today, private-public-private partnerships (PPPs) are widely deployed around the world to develop energy and municipal pipe networks, expand communications and transportation systems, and to build and operate water, sewage and waste treatment facilities and