So you've established that there's some kind of hierarchy here, where the value of 1 pizza to a certain entity depends on their place in the hierarchy. The high

So you've established that there's some kind of hierarchy here, where the value of 1 pizza to a certain entity depends on their place in the hierarchy. The higher up on the hierarchy you are, the less 1 pizza matters to you. Furthermore, you've stated that it's "categorically worse" to get a free pizza from a family business than from Domino's, because a net loss of 1 pizza matters less to Domino's than it does to a family business. I agree with this assessment. However, I would posit that a single university-aged individual is even lower on this hierarchy than a family business is, so unless Domino's had the same promotion going on and they chose to target a family business instead, the logic seems to defend their action. It's probably also worth pointing out that the original commenter only said "local pizza place", which isn't always used synonymously with "family business", and additionally that describing an explicit instruction ("you [can] enter as many times as you like") as a loophole is somewhat of a stretch.