Arby's was around in the 1970s and 1980s, though I admit things were different then. Chains like Penn Station didn't exist when Arby's was getting established, or else weren't chains yet, and in my area, Arby's has a numerical advantage (more franchised sites). I don't think of Penn Station as fast food (or else think of it as sub shop) and don't think I have seen McAlister's in my metro area.