What about franchise fees? Independent fast food restaurants basically don’t exist in the U.S. anymore. An individual McDonalds may be scraping the boundary of profitability, but corporate had a net income of $1.5B last quarter[0], or about $7,500 per employee per quarter[1]. That’s net income, not revenue.
[0] https://corporate.mcdonalds.com/content/dam/gwscorp/assets/i...
[1] https://www.macrotrends.net/stocks/charts/MCD/mcdonalds/numb...