Silicon Valley loves to shine its turds. And they love to believe their own stink about how much they're disrupting and changing the world. And yet the most funded startups are just car services and rooms-for-rent and song-sharing-apps and the next social media whatever. When the top 10 SV funded startups are solving really big problems, then I'll start believing this nonsense.
SV $ is far from perfect but it is surprisingly audacious and fault tolerant.
A few examples old and young:
Genentech
SpaceX
Joby
TAE Technologies