That is really verging on "apples and oranges". Windows is the OS, which is a very different thing to a game. The OS industry is one that demands such long term support, unlike games. OSs often run mission critical apps whereas a game is simply a form of entertainment.

Games developers have a history of being much more volatile: Including; going bust, being bought out, changing publisher, dropping support, releasing only a certain number of patches etc. In fact when it comes to placing a bet on either a games developer supporting my game a few years down the line or MS supporting one of their OSs then I'd have to (reluctantly) go with MS every time. Also touching on games developers changing publisher - this often involves difficulty in finding/downloading patches and multiplayer servers going offline.