A billionaire does things for many reasons. None of those are in your interests unless you also happen to be a billionaire.
The sooner you learn this, the sooner we can start doing something about it.
Discussion
Since a couple of you asked what’s the something we can start doing about billionaires, it’s simple:
Whatever you can to make them socially unacceptable. Make being a billionaire the equivalent of wearing fur.
Don’t feed them if you can help it (easier said than done). If you must feed them, make sure people know you’re not happy about it. If there are alternatives, fund, promote, and use them. But at the very least don’t praise and glorify them and stop giving them “the benefit of the doubt.”