I also think this is why LLMs were trained to behave the way they do. The people who gave the training objectives and evaluation targets were exactly those rich folks who never hear "no". Hence LLMs are their dreams of a perfect servant.

I found another sign of that is the way LLMs answer with a professional, business-like tone even if the request is completely bananas. It's what a concierge or butler would do, but not an actual close friend.