The atmos in the Bay Area is part of the reason SV is where it is.
I would say it's more to do with money than atmosphere.
The Bay area is uber-rich because of a) gold and b) highly favorable geography. The natural harbor created by the bay made San Francisco the major port on the west coast until the early 20th century. At the time that the US wrested California from Mexico, SF was effectively the capital city in the state. Add to that the beneficial agricultural conditions stretching down from the Sacremento Delta (where the city's water still comes from) and it's the kind of perfect setup you read about in books like Guns, Germs and Steel.
I would say it's more to do with money than atmosphere.
The Bay area is uber-rich because of a) gold and b) highly favorable geography. The natural harbor created by the bay made San Francisco the major port on the west coast until the early 20th century. At the time that the US wrested California from Mexico, SF was effectively the capital city in the state. Add to that the beneficial agricultural conditions stretching down from the Sacremento Delta (where the city's water still comes from) and it's the kind of perfect setup you read about in books like Guns, Germs and Steel.