Why is McDonald's so successful?

Related questions

1. Where does Burger King deliver to?
2. Does Burger King still give out crowns?
3. Why is McDonalds delivery unavailable on UberEATS?
4. Does UberEATS accept cash?
5. Does Burger King do breakfast?
6. Does Taco Bell still have empanadas?
7. How much of Taco Bell meat is real?
8. Does KFC do breakfast?
9. Does Burger King serve fries in the morning?
10. How do you get McDonalds delivery?

Tags

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2. #system
3. #million
4. #today
5. #created
6. #industry
7. #sales
8. #business
9. #reason
10. #united
11. #workers
12. #success
13. #states
14. #their
15. #better
16. #hamburger
17. #mcdonald
18. #billion
19. #because
20. #grown