Wealthy is relative. When I lived in Africa for 30 months in the mid 1980s, I was (as a white man) presumed to be very wealthy by a far higher percentage of people than I was in the USA. And in fact, relatively speaking, I probably was far wealthier. I found a lot of "fast friends" were attracted to engaging with me, some out of common decency to make outsiders feel welcome, but others definitely on the bet that if they befriended me they could ask for a loan or a favor.
Naturally, the more people are trying to "make friends" with you, the more discerning you have to be in accepting those friendships. If I was a billionaire in the USA, I imagine there'd be similarities.