I'll take this opportunity to point to the real history of SV:

https://www.youtube.com/watch?v=ZTC_RxWN_xo

Lecture by the Computer History Museum in Mountain View. The first half doesn't seem to be about SV at all - except that it is.

Bottom line: Huge spending on R&D during WWII (based mostly on debt, by the way) by government is the true foundation of SV, private capital only came in when the field had been prepared and fertilized.

I keep posting this video when the context seems appropriate because it was an eye opener for me who had a CS and a business education and had always thought SV was the proof of private capital's success.