While he may not necessarily give out all that he has laboured for doing such a giveaway is part his own services to humanity, he is a philanthropist by given a help handa to the charity organization, I don't really think if there is anything behind the scenes, alot of people does it in their own little way yeah it must not necessarily be a very wealthy man like that of Bill Gates. However, such mind of generosity is more of a personal decision, there is a man in my community that runs a foundation of paying students scholarships but when considering people that are very rich in the community he will only be at the tenth position while those that are richer than him couldn't do anything of such for the community so you see, and it is a legacy to those doing that.