One learns quite easily to identify the rich person who is making a career out of dangling the carrot; of being fawned on by institutions eager for his (or, more often, her) money. It is not very productive to "cultivate" them. I associated with many, and developed great compassion for rich people who suspect that they are in demand only because they are a potential source of income to some cause or institution. Whether it's true or not, their suspicions isolate them from all save a handful of old and trusted friends, turn them sour, make it difficult for them to accept new friends at face value, and leave them with little attraction other than their money.