Couldn't happen soon enough. You really can't find a single MS success story during his tenure.
Really not one? The XBOX? The Kinect? Windows 7? All failures to you... wow. Also, how about Office? Still the most used word processor, RDBMS, Spreadsheet software in the world - not an easy feat to maintain when open source (free) and Apple solutions are nipping at your heels the whole time.
Despite the recent failures (which I blame for MS trying to get ahead of itself... touch screens on everything are the future, just not the now), Microsoft is still infinitely successful on several fronts. It's just their most visible fronts to the public not doing so well (phone, Windows), but their business solutions are far and above everyone else including Office, SharePoint, and SQL Server. These are areas Google and Apple can't even break ground into.