Yes, it could happen in California too--not now with todays mix and dynamic. But, sadly, to make it happen sometime soon you would need to import all the folks from the East Coast that make it come off so naturally yet thoroughly planned.---I realize that's not very practical. And they wouldn't fit---physically or psychologically---into California. I don't mean that as a putdown of Cal. There are just a bunch of wonderful folk people in D.C. and south from there--as well as in New York, Boston and New England---from the ocean to the Appalachians. And this paean to the people that make it happen---there and at other gatherings all over the world--is from a someone who is thoroughly midwestern --as my friend Joel Mabus says.
P.S.---There's a challenge for ya.