> A pizza in a restaurant, a pizza in a supermarket and a pizza delivery are all pizzas, but they're not the same product
If the product is "pizza", then of course they are the same product.
Lay out a salami pizza from a restaurant, supermarket and delivery next to each other on plates and they will (mainly) differ only in quality and price.
If the product is "pizza", then of course they are the same product.
Lay out a salami pizza from a restaurant, supermarket and delivery next to each other on plates and they will (mainly) differ only in quality and price.