As I read it Google has "sidestepped" the copyright violation via this lawsuit; a step which any other company doing the same thing would also have to do.
It's untested (and therefore somewhat difficult to assert with way) whether anyone else could win a similar lawsuit to attain similar rights. Also it is not yet tested whether publishers could be approached with a license model for orphaned work without it having to go to the courts.
I think granted the exclusive right is simple an opinion; because none of the court documents appear to grant an exclusive right.