istorian H. W. Brands noted that in the years after the Gold Rush, the California Dream spread across the nation:
The old American Dream ... was the dream of the Puritans, of Benjamin Franklin's "Poor Richard"... of men and women content to accumulate their modest fortunes a little at a time, year by year by year. The new dream was the dream of instant wealth, won in a twinkling by audacity and good luck. [This] golden dream ... became a prominent part of the American psyche only after Sutter's Mill."[5]
https://en.wikipedia.org/wiki/American_Dream?
Modern California dream includes the new gold rush such as Hollywood and Silicon Valley. Most of us outside California has nothing to do with that.