What they have going for them is consistency. You're going to get the same food at a Denney's in Miami as at a Denney's in Anchorage. Yes, they are operated (mostly) by regional franchisees, and hire local help, but they have to buy from the corporate supplier, and prepare their menu EXACTLY as dictated in their contract or their franchise will be pulled.Interestingly, chain restaurants are usually operated by a franchisee that is local and employ locals...
Yes, some Mom & Pop's are better- and worse- than others, but the not-so-good ones usually don't last long. Gimme a local, one- or-two off that has a sign outside saying something like "Serving you since 1947" and a parking lot full of local license plates- THAT's where I want to eat!
Jim