only one error that I saw, Ray Kroc was a shake machine rep when he started as a franchising agent for McDonalds then he bought the franchising rights for McDonalds. While he tried to buy the actual stores, the McDonald brothers wouldnt transfer over the property rights. He then stiffed the brothers on their royalty agreements (1.9%) and built new stores close to the originals and drove them out of business.
I guess I learned something as a manager at McDonalds all those years ago!
Kroc got his start selling paper cups. He then moved on to his more famous milkshake machine selling phase.