Who can then be held responsible when a big company commits criminal acts? Maybe they should arrest all people who opened those fraudulent accounts. All of them. Maybe that will be a deterrent.

But in general a CEO should have a duty to ask questions why a certain division seems to be doing well. Maybe it has to do with earnings targets that are simply unachievable? I see that in my own company. The top guys are setting shorter and shorter deadlines and in my view the quality of engineering suffers. Top management doesn't technically know when people are cutting corners but they could easily have listened to people that the demands are too high.