As a Japanese citizen, I would feel safer seeing the TEPCO corporation dismantled, and it's leadership behind bars. But the courts declared them not guilty.
A late addition, but I should also add info about Onagawa Nuclear Powerplant. It survived the exact same disaster with no melt down, only because the manager staunchly refused to back down on constant safety training and disaster drills. Of course, to the frustration and chagrin of upper management.