The products Windows have to offer in the business environment are very good and they have Windows XP and at a push Windows 7. This will most likely be when they have no choice but that is how enterprises are! Windows 8 is their way of breaking into another market which they used to have but because of the iPad and iPhone they are losing out on. Technology is changing and desktops are not cutting it anymore. If Microsoft want to continue selling their products to home users then they have to adopt into mobile platforms and that is exactly what they have done.

Another thing to consider is that iPads are now being used in enterprises, heck we have at least 6 of them where I work now. Managers use them in meetings and so forth. As the iPad progresses they can cause a threat for Microsoft.