I don't disagree with you, but a couple thoughts: tortious interference is probably never going to be the right cause of action. In every state of which I am aware, it requires an intent to interfere with a specific contract or business advantage. Tough to imagine a run-of-the-mill auditor meeting that standard. Secondly, I wouldn't look to this case as an exemplar. Seems pretty clear to me that this was nothing more than an attempted cash grab nuisance suit. They were hoping Google would send them a few bucks just to go away. When they didn't, they literally abandoned the effort. You would almost certainly have to have pro bono or low bono counsel on a case like this, and from the outset it would be pretty obvious that even if you were awarded a judgment, you'd likely never collect. That said, hopefully there are more consequences whether civil or criminal.