I love the commenters describing it as being like a scene from Bonfire of the Vanities or serving Egyptian pharaohs. Speaking from experience, there are plenty of poor people that are at least as aloof, entitled and rude to service staff as rich people, often times even worse. And corporate restaurants/stores mimic the same patterns as shown here, you just get paid less and treated worse.
We need a reverse Yelp that reviews humans rather than businesses. So many people fail to follow the Golden Rule in simple, everyday interactions for no discernible advantage to themselves at the cost of dignity, respect and efficiency.
Some customers you don't want. And the customer is not always right. A sort of trade embargo in response to poor behavior would be interesting.