(p. 161) They made their profits not from their skill in manufacture, but from their skill in the design of machines that could spin and weave better and more cheaply than those of their predecessors and contemporary rivals. They were highly successful, though their names are all but forgotten.
Rosenberg, Nathan, and L.E. Birdzell, Jr. How the West Grew Rich: The Economic Transformation of the Industrial World. New York: Basic Books, 1986.