Barely sustaining if you only look at the public and flashy side of their business. They were still pulling in a lot of revenue and profit and were actually much more diversified that people gave them credit for.
True but that action in the shadow is what fuels the surprise. The consumer side has seen Surface (great job), but Windows is weird, Office can't improve much. They got the online version working neat. It's all cool, but it's not as ~innovative (I know apple knows how to make it even more flashy) as iphones and the likes.
Azure has sustained double-digit YoY growth for several years.
Even lowly Windows 10 is seeing modest growth.
They don't need to innovate to continue to print money for shareholders. The company is so diverse that they can write off a few billion in loses on, say, a phone division, and still enjoy double-digit revenue growth.