I don't know about the US (I suspect it will be the same) - but the chains in the UK compete with each other like a bunch of hyperintelligent velociraptors.
Quite good for customers though - in the (rather affluent) area where I live we have a Sainsburys, Waitrose and M&S food store and they are clearly locked in polite but vicious competition.
Quite good for customers though - in the (rather affluent) area where I live we have a Sainsburys, Waitrose and M&S food store and they are clearly locked in polite but vicious competition.