Sure, but you can have a specific, earthquake-proof building for the emergency generators. Actually, it seems that few buildings did collapse following the earthquake. At least the nuclear power plants buildings did not.

"People only accept change when they are faced with necessity, and only recognize necessity when a crisis is upon them." - Jean Monnet

Not to mention potential Godzillas, Mothras, etc. I mean, who the heck did the disaster probability calculations, anyway???