Doesn restricting corporate speech give an unfair advantage to critics who can say anything they want?
The situation would be no different than that which holds for corporate relationships with investors. Investors or financial editorial writers can make claims about the accuracy of corporate statements without fear of legal repercussions (provided they will not gain financially from the effects of their statements). However, corporate officials are considered to be in a privileged and powerful position and can be held accountable for lying about the status of their company.