The criminal justice system doesn't exist to emotionally satisfy the victims.
In this particular Boeing case, I bet my ass that the corporate world is taking notes as the plea deal is a sweet deal; thus a incentive is provided to do the crime. It would be funny if the victims of the next Boeing sue over inciting the crime they will be a victim of.
They probably made more money by not being so strict on safety. These fines are too low. Company should go close to bankruptcy if they do something serious.