Was warm enough for Henry Ford, The Dodge Brothers, William Durant, Herbert Henry Dow, Louis Chevrolet etc. Maybe some thicker skin and a harder winter would benefit folks ;)
Ex: ~1000$ an acre. https://www.landandfarm.com/property/Freeman_Ranch-7072064/
https://en.wikipedia.org/wiki/List_of_U.S._states_by_histori...
I believe the population growth has contributed to the growth of Silicon valley significantly. There seems some feedback loop between the population growth and the industry growth.
Later automation reversed the trend to favor skilled labor to administer machines as being better quality and cheaper than mass cheap labor.
The point being then they had to cater to the bulk of their labor. I do not know the precise history of the region but farm families tend to produce an excess of people with larger family sizes than suburban or urban families.