It is the general rule that you cannot intentionally misinform the public without some consequence for your mistake. We witness this most commonly through media shows like today tonight or consumer affairs, which publicly shame businesses for misinforming the public producing a false or unfair result. A couple of years ago a juice company Ribena was rebuked after its ‘black current health drink’, promoted to children and their families, was shown to be incredibly unhealthy. The drink deliberately misled parents to believe that it was safe to consume regularly when in actuality it could have harmful effects on health if regularly consumed without a healthy diet and regular exercise.
I am sure there are much more examples of penalties for companies that misinform the public.