Chick-fil-a is franchised.
In-n-out is not.
Chik-fil-A is a very different type of franchise than typical. The franchisee has skin in the game but does not own the facility or intellectual property.
I looked into this because I wanted one. It’s a good model for somebody who wants to work hard and make good money but it doesn’t really build wealth that can be passed on to heirs.