The only way the focus will change is if someone is held accountable. We all know the pilots and engineers on the day will be the scapegoat, but the people who should be held criminally accountable are the board of directors AND the shareholders.
The reason why I include shareholders (primarily institutional as opposed to the small family investor), is because they endorse these directors, and the continue to endorse their decision making with large, ridiculous increases in remuneration.
As to how prosecution of shareholders/enforcement would occur, I have no idea.
It cannot be sustainable, to have the CEO/directors of the company, just pass the buck when something goes wrong.