Final answer:
Ray Kroc and the McDonald brothers created and maintained their success through their entrepreneurial skills and innovative ideas, such as implementing the assembly line production model and focusing on quality and customer experience.
Step-by-step explanation:
Ray Kroc and the McDonald brothers were able to create and maintain their success in the fast food industry through their entrepreneurial skills and innovative ideas. The film portrays how they revolutionized the concept of fast food by implementing the assembly line production model, which allowed them to serve food quickly and efficiently.
The McDonald brothers had already developed a unique system for making hamburgers and fries quickly, which Kroc saw as an opportunity to expand on. He convinced them to let him franchise their system, and he was able to successfully replicate their model across several locations By focusing on quality, consistency, and customer experience, they built a strong and recognizable brand, attracting loyal customers and franchisees worldwide.