When analyzing the nature of the firm, the new literature tends to emphasize two aspects: A firm involves a set of long-term contracts between input … - Þráinn Eggertsson

The tardy introduction of transaction costs into economic theory is related to the fact that, until recently, most economic theories and models assumed full information, and transaction costs are in one way or another associated with the cost of acquiring information about exchange. But the concepts of information costs and transaction costs are not identical. A lonely person on a desert island will encounter information costs as he goes about his "home production," but an isolated individual does not engage in exchange and therefore will have no transaction costs.

In general terms, transactions costs are the costs that arise when individuals exchange ownership rights to economic assets and enforce their exclusive rights. A clear definition of transactions costs does not exist, but neither are the costs of production in the neoclassical model well defined.

The concept of state ownership is particularly ambiguous. In a democratic society, state property may have some of the characteristics of common property; for instance, the citizens usually do not have the right to sell their individual titles to public property, whereas under dictatorship, state ownership can approach the system of private property with the economy resembling a huge corporation.