My uncle was running a number of fast food restaurants for a franchise owner making millions. His statement about this topic is simple, "they are not living wage jobs ... go into manufacturing if you want a living wage".
I don't like my uncle at all and find him and people like him to be terrible human beings.
If a business can't pay a living wage, it's not really a successful business. I, too, could become fabulously wealthy selling shoes if someone just have me shoes for $1 so I could resell them for $50.