I think you're right that the effect on California would be pretty ho-hum, though. California prepares for earthquakes; most of the building codes are designed for > magnitude 8 quakes, major companies headquartered here have earthquake drills to maintain continuity of business, schools teach kids what to do in an earthquake, and I'd bet that first responders and hospitals all drill for what to do. The electricity & Internet would likely go down, because PG&E and Comcast seemingly can't keep them running even in the absence of natural disasters. And transportation would be a problem - even the mudslides last winter managed to take out all the roads over the mountain and large sections of highway 1. But I don't think you'd see large-scale chaos or civil disorder, at least in Northern California.
No idea whether you'd see the same in SoCal; aside from them expecting a larger quake, sooner, than the Bay Area, they haven't had one since before urbanization. I suspect their building codes are the same, though, so unless it's Santa Ana wind season they'll probably do okay.