also remember that competition in retail banking is not always a good thing. to produce banking competition you need to issue banking licenses. competition may result in innovation, however it leads to risk taking and leveraging in finance, something that tends to result in crises. back when a banking license was difficult and costly to obtain, a banker would be loathed to risk losing that license by taking unnecessary risks. by promoting too much competition in the banking industry, it makes it hard to achieve sizeable economies of scale which would allow cheaper wholesale borrowing.
just saying