Corporate profiteers were expanding the steel industry throughout the late 19th and early 20th century. What changed in the 20th century is labor law that gave

Corporate profiteers were expanding the steel industry throughout the late 19th and early 20th century. What changed in the 20th century is labor law that gave unions a monopoly over their employer's bargaining options. It predictably led to rent extraction, declining performance and unsustainable collective bargaining agreements.