Counterpoint: Customer service at restaurants in Japan (where tipping is not customary and where immigration policy is strict) is excellent, much better than in America. I’ve had wonderful service even at fast food restaurants; the workers are friendly, service is timely, the orders come out correctly, and the presentation of the food is thoughtful and considerate of the customer. I stress these things because I’ve had some bad experiences in America where I end up with sloppy food served by surly staff.

I think the differences in customer service expectations are cultural in nature.