The article says that can make about 10x as many pizzas as a similarly staffed pizzaria. Along with their delivery innovations, it seems like they could serve a wider area and deliver pizzas much faster, especially at peak hours. The last bit strikes me as important: I really haven't ordered much pizza since the early 00's because at peak hours it could take 20 minutes or an hour - if it was a reliable 20 minute delivery, it might be more tempting (especially if automation grants some quality improvements).