California was booming so hard in the 1950s that within a single decade three MLB teams moved there, two directly from New York City, and California got another

California was booming so hard in the 1950s that within a single decade three MLB teams moved there, two directly from New York City, and California got another as an expansion franchise. This was well before Silicon Valley was anything, well before the "traitorous eight". California's economy was growing like topsy from before the early Hollywood days in the 1920s. San Francisco was an immensely wealthy city before then, because of the gold rush. Even today California's economy is so huge that Silicon Valley is only a small slice of it.