Rent is usually defined as the return for the use of natural objects and agencies. Rent has usually been low in the United States because of the large amount of land and other natural agents available. In general it may be said that when any factor of production is relatively abundant in comparison with the other factors, its share of the product will be small.[41] Henry George, however, argues that as the amount of land is limited and is now practically all taken up, the future will see a constantly increasing demand for land, and hence the landlords will absorb most of the future income of society. This is true of most of land and other natural agents especially in demand, as choice sites in our cities, anthracite coal mines, etc. The practical problem that suggests itself is, do we wish private property in land? The socialists answer no, but the individualists insist that the best use has been and can be made of land only by reducing it to private ownership. In practice, however, even in modern individualistic societies, the absolute and unregulated use of land by the owner is restricted in various ways.
Interest is the amount paid for the use of capital.
From the time of the church fathers in the Middle Ages down to the present-day socialists, interest and the private ownership of productive capital have formed favorite objects of attack. The justification of interest lies in the fact that men prefer present goods to future goods—a bird in the hand is worth two in the bush—and interest is the difference in value between the two at the present moment; it is time value. The justification of private property, on the other hand, lies rather in its expediency than in any inherent and unalterable law of nature. It has developed with civilization and has been, without question, a fundamental cause of material progress. But moderate individualists even, as John Stuart Mill, have attacked the institution of inheritance while leaving the main edifice of private property untouched. They would limit absolutely the amount of bequest or, as President Roosevelt advocated, would use inheritance taxes as a means of breaking up large fortunes.
Profits are the reward which the manager of a business receives for his services in organizing and superintending the business. This share of the social income was the last to be recognized by economists, and its rightfulness is even yet denied by the socialists. They insist that profits are really the earnings of labor which have been withheld from the laborer by the superior skill and economic strength of the capitalist manager; they are institutional robbery, the exploitation of labor. It is not possible to take up the arguments on this point, but it may be said in a word that the manager of business contributes a needed service to the work of society just as truly as the laborer does, and receives his earned reward in the form of profits.
Wages are the reward of labor. It is often assumed that wages are lower than they should be, that the laborer in some way is deprived of a portion of what he has rightfully earned. It is worth while inquiring briefly how the
share of labor in the distribution of the social income is determined. Various theories have been developed to explain the distributive process, of which we may notice three. The oldest in point of time and the most pessimistic theory held that wages were fixed by competition and the growth of population at the bare subsistence minimum, a bare starvation level. If by some happy chance wages were raised above this point, then the population would speedily multiply and the increased competition thus brought about among the laborers would depress wages again to the lowest amount sufficient to support a family. Under the name of the “iron law of wages,” this theory is still put forth by the socialists as the explanation—together with the institution of private property—of wages. Historically, however, this theory has happily been proven untrue, as the advance in the standard of living among the working class during the past century testifies. It has now been almost wholly superseded by the so-called productivity theory,[42] which asserts that wages depend upon the productivity of labor; that the laborer gets what he produces, and that this share is assured him by the working out of the competitive process under free competition. If this theory is true, there can be no ethical question raised; if labor is dissatisfied with its share, then it must increase its productive efficiency. As a matter of fact wages have always been high in the United States because labor has been relatively scarce compared with land and capital, and consequently its marginal productivity has been high. The third theory says that wages are a result of bargaining, of competition in the labor market, a question of supply and demand. Under these circumstances it is largely a question of economic strength between labor and capital, and if labor is well-organized, alert, and able to drive a good bargain, then wages will be high; otherwise they will be low. While there is an element of truth in
the last theory, the second one seems the truest explanation of general wages; certain it is that no monopoly power of labor, however great, could permanently maintain wages at a level higher than the actual produce of labor. The element of truth in the first theory is that wages can never, for any length of time, fall below the cost of subsistence.
Of more practical interest are questions connected with the personal distribution of wealth. In this connection arise such problems as the increase of large fortunes, the causes of poverty, and similar questions. The boast of our Republic has long been that here opportunity was open to all, that wealth was widely diffused, and that such inequalities of fortune as characterized the nations of the Old World were happily lacking. In the fifty-five years, 1850-1904, the per capita value of all property in the United States exactly quadrupled; how has this increase been distributed? Unfortunately we have no complete statistics on this point, yet reliable estimates by authoritative writers all tell the same story—of great concentration of wealth in the possession of a comparatively few rich families. In 1893 Mr. George K. Holmes concluded from a study of the statistics of farm and home ownership in the United States that “91 per cent of the families of the country own no more than about 29 per cent of the wealth, and 9 per cent of the families own about 71 per cent of the wealth.” A more accurate and satisfactory statement can be drawn from the income-tax returns for Prussia, which tells almost the same story with regard to income. The table on the following page is condensed from an article by Professor A. Wagner:
Distribution of Income in Prussia, 1902
| Income | Per cent of persons | Per cent of income |
| Below $214 | 70.7 | 33.0 |
| $214 to $714 | 25.8 | 34.9 |
| Over $714 | 3.5 | 32.1 |