>>> Not to mention their Office 365, MSDN, etc lines that are mad profitable. Combined with their Azure services, they've developed several other valuable stre

>>> Not to mention their Office 365, MSDN, etc lines that are mad profitable. Combined with their Azure services, they've developed several other valuable streams of revenue. Probably enough where they can give away their OS for free in order to gateway these users onto their other products and services. This is a classic business move, the same thing Apple has done for years with its products. Granted, they're not the biggest, but they are starting to put a dent in Amazon's market: http://www.infoworld.com/article/2608726/cloud-computing/cloud-computing-microsoft-azure-the-world-s-biggest-cloud-someone-s-fudging.html http://www.infoworld.com/article/2608726/cloud-computing/clo... "Our commercial cloud revenue grew 147 percent this quarter, driven by both Office 365 and Azure. Our commercial cloud annual revenue run rate more than doubled this year and now exceeds $4.4 billion and with this rapidly growing scale we continue to expand our cloud gross margins."