It's interesting to see this framed, both here and in the comments, as if it's some transitory phenomenon and California may be expected to soon decline afterward. I'm reasonably sure that isn't true. I haven't lived in California in quite a while, but grew up there in the 80s and 90s and I at least <i>think</i> I remember them telling us in school back then that California was the world's 4th largest economy back then. It seems that it regressed a lot after 2008 because it was hit so much harder than most of the world by the housing market collapse, and it is now mostly recovered from that.<p>Back then, it was largely on the back of tourism, farming, and entertainment, too. Tech is a nice boon, but hardly necessary. California is not and has never been a single-industry economy, which is part of the reason it is so robust, and part of the reason it has recovered from the housing collapse better than most other places hit hard by it. Florida is another case there, with, at least for the US, much different tax policies and cultural traits, but also a very well diversified economy. It goes to show how little some of the things politicians and voters are always making a fuss about actually matter.