The best business books ever written were written by the best business men to ever live. Sam Walton, Henry Ford, and to a lesser extent, Charles Koch and Larry Ellison, wrote very readable books on how they did it with gems of wisdom on every page.
I went to business school and did not get assigned one business autobiography in my whole four year education. I read a lot of garbage textbooks by professors who had never founded or built a business instead. I didn’t know any better.