FlL is pretty dominant around me. They definitely aim for the lower end market, though some renovations I have seen recently suggest they are starting to aim higher. And they are not entirely bottom of the market. I have a local grocery near me that has a few good highlights, and local character going for it. When I want more, like a chance at decently fresh fruit, I spend 20 more minutes on the road to go to Food Lion. When I want good fruit, I spend 40 more minutes on the road to go to Martin's (Giant).
I am eagerly waiting for for the day that Wegmans or Trader Joe's is less than an hour away.