Have you ever encountered the customer service in Europe? (Especially outside Germany, Sweden, etc.) It's awful and everyone is rude. It's because they don't have to worry about being replaced by illegal immigrants.
And it's not awful, and people are not rude, just not "fake-friendly" as americans.
I think the differences in customer service expectations are cultural in nature.
Can you expound how they are related, and if you have some insight, where this has been researched?