The answer is wisdom. How power is used is up to the individual who wields it. As I’ve said before, wealth doesn't equal wisdom. Pride isn’t an easy thing for any of us to overcome, and wealth just inflates pride. Wealth elicits power and together they bolster pride (like gasoline on a fire). That's why many wealthy people are very prideful (they think of themselves and their wealth first). They don't have to be, though. One can have both wealth and wisdom (although it’s rare). Wisdom isn’t "book smarts" or intelligence. A person with true wisdom is disciplined, and does what is right, just and fair. This kind of wisdom is costly. How many wealthy people can honestly say that they obtained their wealth by being 100% just and fair? Not many. Yes, hard work should equal wealth, but many times the wealthy obtain their wealth at the expenditure of others (i.e. underpaying and overworking their employees (unconcerned with their health or welfare); “cutting corners” on products, services or whatever; taking their money “offshore” to avoid paying taxes); bribes …, or worse, they inherit it.
I don’t know the reason for The Gates’ philanthropism. Perhaps he’s wise enough to understand that “you can’t take your wealth with you” or that “the one who inherits your wealth may be a fool and squander it away”. Using ones wealth to “do what is right, just and fair” (especially while they’re still alive) shows that they have some wisdom. While some of the wealthy folks Trump’s hired are smart enough to see that he’s a fool, they lack true wisdom. They too are haughty and prideful (or they wouldn’t have associated with him in the first place). Mr. Trump has been a fool for many years (a fact he seems to enjoy showing off), so those wealthy folks he “hired” have no excuse.