No, see I asked for a source from you that says Steve Jobs doesn't give over any of his kingdom. You provided a source that says Bill and Melinda Gates are publicly philanthropic to an extraordinary extent. I never disagreed with that part of your point, just asked how you knew Steve Jobs wasn't philanthropic to public satisfaction.
I really enjoyed the part about the image of evil capitalist big brother and free-thinker hippie power to the people. My response to that is it isn't ironic or unintentional that Bill Gates is donating a large portion of his worth to charity, but it's precisely the type of publicity that is required from the wealthiest man in the world. When Steve Jobs is in that position (aka never) I'd expect the same open display of philanthropy as well.
I said it was rumored Jobs donates anonymously. I could look for sources but if it says Anonymous I can never satisfy your request. Maybe that's the difference between Bill Gates and Steve Jobs. Food for thought.