H.C. Engelbrecht (1895–1939) received his PhD at Columbia University, with a dissertation on Johann Gottlieb Fichte. While teaching at the University of Chicago, he wrote the bestseller Merchants of Death (1934) with F.C. Hanighen.
Ludwig von Mises: "Big business depends entirely on the patronage of those who buy its products: the biggest enterprises loses its power and its influence when it loses its customers." - Economic Policy