I pointed out to coworker that Gates dropped out of college. Then he didn't realize that he had made enough money until he had passed the 40 billion mark.
If he donates money to find a cure for AIDS, it will be the first virus Microsoft ever stopped.
I'm not holding my breath. Another virus, the common cold, cannot be stopped despite the unimaginable billions that would flow to whatever company invented that drug.
As with the cold virus, the way to stop AIDS is with prevention. I guess it's just too politically incorrect for the Gateses and Warren to go around the developing world encouraging hygienic behavior. Their compassion apparently has its limits, and one of those limits seems to be not offending the leftist lobbies by violating their AIDS dogmas. Suffering poor be damned.
AIDS is not a virus.