J. A. ホブスンのレント論の再構成 : 新自由主義的社会改革の理論的基礎
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概要
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This paper attempts to reinterpret Hobson's theory of rents and highlight the strong relevance of his theory of rents to the central objectives of New Liberalism in the late 19th and early 20th century as economic activity shifted from laissez-faire competition to monopoly capitalism. In the same period, among the four economists-Sydney Webb, John B. Clark, J. A. Hobson, and Alfred Marshal-who formulated distinct theories of rent, Hobson stands out from the others in the consistency and breadth of his theory. All his ideas for social reform were put forward on the basis of that theory, and his optimistic view of the potential for economic development offered by capitalism can be attributed to his belief that political reforms would secure non-monopolistic and fair distribution of wealth. The three analytical dimensions and concepts in Hobson's rents theory are rent, gain, and surplus. Rent refers to the whole income accruing from the factors of production, and it is divided into three parts: marginal rent is necessary to maintain a minimum standard of living and productive capacity; differential rent is directly or indirectly necessary to enhance the standard of living and productive capacity; and forced rent is the outcome of squeeze and exploitation by monopolistic powers, thus precluding the means to increase the standard of living and productive capacity of the society. Although these definitions of rent are clear enough when they are used in abstract economic theory, they differ considerably from the common usages of "rent." That is because Hobsonian "rents" include, in part, even the wages of labor and profits of capital. Compared with his formulation of rents, Hobson's concept of gain is closer to the way the term is commonly used to understand and explain behaviors and intentions of laborers, capitalists, and landowners. In the dimension of gain, consequently, differential rent is identical to differential gain, and forced rent is identical with forced gain. The concept of gain is nothing but an explanatory device. The idea and theory of surplus essentially fall into the realm of policy and political theory, but "surplus" is accepted as an original and core concept in Hobson's economic analysis. It is, however, so complex that we must initially distinguish between two definitions of the term. First, surplus derives from rent and gain, therefore, it is equal to forced rent and forced gain. Second, surplus is calculated on the basis of cost, and so it is equal to price over cost. The latter definition is further subdivided into productive surplus (differential gain and rent) and unproductive surplus (forced gain and rent). In that sense, surplus consists substantially of differential and forced gain, that is, differential and forced rent. Then, it will be safe to say that unequal distribution of wealth due to productive surplus can contribute and accelerate economic progress, while unequal distribution of wealth due to unproductive surplus will not. Thus Hobson had to advocate a liberal policy for increasing productive surplus (differential gain and rent) on the one hand, and a restrictive policy for decreasing unproductive surplus (forced gain and rent) on the other. Viewing Hobson's thinking in that perspective, we can see that his policy proposals for curing the maldistribution of wealth are consistent with the advocacy by New Liberalism of both liberal and restrictive policies at the same time in the project to promote general social welfare at that time.
- 2008-07-31