This blog appears to argue that by bringing some but not all of it's products to Linux, Microsoft is engaging in Embrace, Extend, Extinguish (EEE). That's a tough sell. If you apply the same standard, virtually ever large company that has ever contributed to Linux is EEE-ing Linux because they released some product that doesn't run on vanilla Linux. The bad action in EEE is extending APIs in incompatible ways and then dead ending them - it's hard for me to see how not shipping Office to Linux qualifies.