On the other hand there's now the option to pursue them in court for recovery of all the royalties already paid, since they didn't have the right to claim them in the first place. I think we'll be seeing a lot of that in the near future.
Lawsuit: "You approached me and gave me false information that has cost me money. Pay me to cover all my losses resulting from this false information."
How (or even whether) the defendent benefited from the losses doesn't even need to come into it, as far as I can tell.