In the market economy the only way left to the more gifted individuals to take advantage of their superior abilities is to serve the masses of their fellowman. The profits saved, accumulated, and plowed back into the plant, benefit the common man twice. First, in his capacity as a wage earner, by raising the marginal productivity of labor and thereby real wage rates for all those eager to find jobs. Then later again, in his capacity as a consumer when the products manufactured with the aid of the additional capital flow into the market and become available at the lowest possible prices. The characteristic principle of capitalism is that it is mass production to supply the masses.
Big business serves the many.
Those outfits that are producing for the special tastes of the rich never outgrow medium or even small size. Under such conditions those anxious to get jobs and to earn wages and salaries have a vital interest in the prosperity of the business enterprises. For only the prosperous firm or corporation has the opportunity to invest, that is, to expand and to improve its activities by the employment of ever better and more efficient tools and machines. The better equipped the plant is the more can the individual worker produce within a unit of time, the higher is what the economists call the marginal productivity of his labor and, thereby, the real wages he gets. The fundamental difference between the conditions of an economically underdeveloped country like India and those of the United States is that in India the per head quota of capital invested and thereby the marginal productivity of labor and consequently wage rates are much lower than in this country.