The "For whatever reason" is that the risk reward is not worth it to experiment with independents. Consumers have shown that they like the familiar by rewarding it financially. Real estate owners and fund managers aren't choosing to make less money, they just have data that shows what course of action likely leads to the highest returns. There are a few places with enough density and people that consciously like to go out and experiment with different vendors and whatnot, but not most places.