Larger food_selling stores can survive on lower profit margins than small pizza shops. For instance, walmart makes 3.6 percent and Safeway supermarket makes around 1.3 percent. (Compare those figures and you can see why many of us questioned walmart’s wisdom of pushing into groceries _- the thought was it should have expanded into higher-profit-margin merchandise instead, but wm seems to have pulled it off successfully).
Thanks, it can be hard to really calculate PFO sometimes from the general info out there.