I think it has something to do with Silicon Valley's obsession with money. To SV-people, billionaires are like gods. They are worshipped and invited to all the events worth going to (meetups, hackathons, etc.). Everyone wants to be like them.
And it seems to me to be a geographical problem too. In NYC, billionaires are like supervillains. Nobody particularly likes them (outside of select finance bros), and people openly express disdain for them and their greed.