Suing Grouper defies logic

It's no surprise to me that a big player plaintiff was imminently to press the issue of whether online video sharing sites may shelter safely within the DMCA's safe harbor provisions.  But why would Universal Music choose Grouper, a recent Sony acquisition, as a defendant?  It's nonsense to think Sony won't hedge its $65 million bet with all the considerable legal muscle at its disposal.  Or, if this is simply a move in a larger chess game among industry titans, the internecine nature of the play is worth noting.