Clayton Christensen *Innovator's Dilemma* (steel mill cost data)

And the big companies laughed at them. They said, you guys can't produce more than a couple hundred thousand tons of steel a year in your plant, and you're selling the lowest-quality stuff. Well, this is the whole story of The Innovator's Dilemma — Clayton Christensen's book at Harvard Business School — about your competition taking a big company and nipping at the bottom of the product line. The big companies are trying to come up with new, fancy, higher-value-added product, and these guys are going after the lowest-quality stuff.