According to the NYT "there is no public record of Mr. Jobs giving money to charity" (http://dealbook.nytimes.com/2011/08/29/the-mystery-of-steve-...).
Giving publicly is important if you want to be remembered for your charitable work.
Giving publicly is important if you want to be remembered for your charitable work.
Regardless, Gladwell is taking the lazy columnist's approach of irresponsible prediction, intending to provoke indignation. There's plenty of room in history books, and both Gates and Jobs will have significant entries. I'll submit Edison and Telsa as examples of contemporaries in the same general field who both remain widely known decades after they passed on.
Whether Jobs donated anonymously or didn't donate at all, I can respect him so much more for not chasing attention and approval.