I live in silicon valley. And I have a good friend from Spain who ever told me about the culture difference between his home town and the U.S. One example he mentioned to me was what you said. He said they have grocery stores they routinely go. it's like a family tradition to always shop at a specific place. They know the cashier well. One day they went to a different store, the store owner became mad.

he said, here in the U.S., business is business. nobody gets attached to a store.