The third and last stage of capitalism is characterized by new forms of industrial ownership, administration, and control. Concentration of industry and the elimination of competition are the distinguishing features of this stage. When, more than half a century ago, the Socialists predicted an era of industrial concentration and monopoly as the outcome of the competitive struggles of the time, their prophecies were mocked and derided. Yet, at this distance of time, it is easy to see what they were foresighted enough to envisage in the future; easy enough to see that competition carries in its bosom the germs of its own inevitable destruction. In words which, as Professor Ely says,[94] seem to many, even non-Socialists, like a prophecy, Karl Marx argued that the business units in production would continuously increase in magnitude, until at last monopoly emerged from the competitive struggle. This monopoly becoming a shackle upon the system under which it has grown up, and thus becoming incompatible with capitalist conditions, socialization must, according to Marx, naturally and necessarily follow.[95] In this as in all the utterances of Marx upon the subject we are reminded of the distinction which must be made between Socialism as he conceived it and the Socialism of the Utopians. We never get away from the law of economic interpretation. Socialism, according to Marx, will develop out of capitalist society, and follow capitalism necessarily and inevitably. It is not a plan to be adopted, but a stage of social development to be reached. II