People seem to idolise Jobs, like some kind of rock star or movie star. Everything I've read about him seems to indicate he was a bit of a shit person. That probably sounds a bit harsh, but I think it's true.
I doubt Ritchie or Silk were concerned about being revered as god like beings. As for Dennis Ritchie, there was certainly enough awareness of his passing in circles such as ours and I think most of us probably hold him in much higher regard than Steve Jobs. Polio ceased to be a problem for us thankfully, and the average person probably has no idea what UNIX or C is, which I think is the reason for so little coverage.
I have no idea who invented peanut butter, pesto, elastic or the computer mouse (which are some of my favourite things in the world). Maybe we should all take a moment now and again to appreciate the people who brought about the things in life we love so much, or the things that stop our pants and socks falling down...