There are no Chick-fil-A restaurants in San Francisco. We are snobby elitists who don't want any poor people in our city and very few people from the middle-class.
What interested me were two elements that seems to indicate the reasons for this restaurant chains success.
One was the existence of three items on the menu that are in the appetizer 'to be shared category'. This is clearly a part of the social ethic of the Walmart society. Chick-fil-A is satisfing the needs of that community.
Second was the fact that when I went to actually eat on a Sunday, Chick-fil-A was closed for the sabbath. Again this is consistent with the social ethic of the Walmart society.
In Israel most businesses are closed on the sabbath. My friends always justify this in terms of a day of true rest that is good for the mind and a day to spend in the bosom of the family.
So Chick-fil-A supports conviviality and family. It should be no surprise that they are successful.