MSFT IS WAITING FOR ANY SLIP FROM GOOGLE TO STEAL THEIR BUSINESS! AND GOOGLE IS PROVIDING THAT OPPORTUBITY!
Google is trying to change their bread-and-butter, $300-billion-dollar ad=search and adwork algorithms to avoid infringing two patents from VRNG (Vringo). This could have significant material impact on Google's business as the new algorithms could devastate Google' ad revenues, pushing them down to below competition. MSFT would love the opportunity to knock out Google.
It's much better to settle with VRNG and get this workaround idea stopped on its track before it's too late for Google.