Ford didn't invent modern industry. He didn't invent interchangeable parts or the assembly line. But he combined these elements in a way that revolutionized the meaning of manufacturing. And he did so deliberately. Ford's genius was to make cars simple, solid and inexpensive necessities.
That philosophy paid off when Ford's $850 Model T became the most successful vehicle ever produced in America which helped propel Ford Motor Company to become the largest industrial organization of the early 20th century. By the end of World War I, economies of scale had made it so affordable that half of all the cars in the world were Model T's.
Ford's impact on Twentieth Century business was perhaps most important for the immeasurable impact he had on American life. As Ford adapted the emerging principles of mass production to the automobile and hired tens of thousands of workers to put those principles into practice, he gave rise to an entirely new phenomenon: the blue-collar middle class. He proved that one of the most damning charges in the Marxist indictment of capitalism was wrong. Marx insisted that capitalist economics would never allow the working class to be able to buy anything more than the necessities of life. While the academics squabbled over whether this was true, the Detroit carmaker proved that it wasn't. Thanks to the example set by Henry Ford, by the end of the 1920's there was one car per every 5 persons in the U.S. Henry Ford's revolution wasn't technological or even industrial as such. It was a revolution in the standard of living -- the relation between the money a worker earns and what that money can buy. Before Keynesianism; before redistributive economic policies; before the subsidized capitalism of the military-industrial complex, Henry Ford brought middle-class dimensions to working-class life. He proved that capitalism works not just for the capitalists, but for everyone.