I worked with people who helped Jim Clark with some of his home automation in the early/mid 2000s.
My point in general was I think the Silicon Valley elders of old, Grove, Moore, Packards (I know multiple individuals who benefitted from the Packard Children's fund w/ pre-mes. (sp?), etc. were much more community and outward focused than that which we see today.
There are people here and there, but a lot of what gets glamorized or talked about tend to be more selfishly oriented individuals.
Gates, early on, stated his kids weren't getting a huge part of his fortune, I consider his works on par (via the Gates Foundation) as those of the Packards. That said, the Packards have been very local vs. Gates more international (maybe it's need, size of endowment, etc).