Is there a way we can be sure his donations (and the donations of people and companies that decide to donate because he is doing so) are not furthering his own

Is there a way we can be sure his donations (and the donations of people and companies that decide to donate because he is doing so) are not furthering his own agenda and creating a market for the companies he invests in? Even if they are beneficial to the affected populations, can we call that philanthropy? You mean, does he hope to make back hundreds of billions of dollars from the tens of billions of dollars he is giving away? He currently owns less than 5% of Microsoft, and on schedule to own even less (possibly none) in 5 years. You're suggesting that Bill Gates is such a skilled investor that his investment of well over $30B will earn him huge profits from his portfolio of stock investments, preferably before he dies? I know it will be a wildly unpopular question to ask but, after his own history at the helm of Microsoft, where he made most of the money he's using now, can we trust him? You make it sound as if he made his money by selling babies. I know Bill Gates was a ruthless entrepreneur, with questionable ethical practices. But what did he do at Microsoft to make you think he's incapable of doing good for doing good's sake?