Or maybe, just maybe, they actually did unreasonably damage the pipeline company's reputation, in a way that is outside the legally-recognized bounds of free speech. Maybe justice actually was done.
(Note well: I haven't been following this case closely enough to say. But you should at least consider that as a possibility.)
this is only possible if you can somehow square a pipeline company's activities as intersecting with the arc of justice. as it stands, they're actively hastening the degradation of land, water, wildlife, human life and surrounding climates everywhere they operate.
Does your theory pass the sniff test? How reasonable is it to believe that Greenpeace's "defamation" cost the company hundreds of millions of dollars? Why is $345 the correct three-digit number of millions for the reputation damage Greenpeace caused?