Thank you for your interpretations and feedback! The game absolutely does not use free Unity models though! I made every model. If you're interested in more about the possible motivations of the old man and why he sees the shoppers as nameless faceless people, check out my earlier game that this is a sequel to: Lord of the Aisle.
Or it could also be that he is actually a wizard in a dungeon, and being affected by mind-influencing magic to make him think he is a feeble old man in some strange consumerist dystopia, and lure him into dropping his gold for illusionary products.