Where Microsoft and Valve differ is that, while Valve's Steam service is known for its quality of service, Microsoft is known for shutting products down wheneve

Where Microsoft and Valve differ is that, while Valve's Steam service is known for its quality of service, Microsoft is known for shutting products down whenever they decide they're no longer in the interest of the company. Oh, right, and without any PR or customer service to quell concerns (see: Kin, Zune, Silverlight, Microsoft Broadband Networking).