When you add in "responsibility" like that, it becomes very vague. What does it mean for a company to have morally transgressed? Does it mean that it has violated its conscience, or does it just mean that it's an unfortunate behavior we would do best to punish?
Companies are inert objects. They do not have consciences. I can't say that a company does an evil thing, any more than I can blame a rock someone else threw for hitting my head. It hurts, but I can't very well blame the rock for it. Companies are just like driftwood in the ocean; their motion is defined solely by the forces acting upon them.
What is left, then, is to suggest that society should go after the companies that don't do what we want. But this can never be done by individuals. It has to be done by unions, governments, or something of the sort. It cannot be done by the companies themselves, and it cannot be done by individuals.
When you suggest that companies are doing something wrong, and not the government for failing to regulate them, this is tantamount to suggesting that the responsibility for punishing them actually lay on the individual. But to do so makes the primary victim into the perpetrator of the aggression against him. It is a terrible thing to do.