There is no evidence that what Nadella is doing is becoming successful. Windows licensing is down again, and looks to be down in the future. Win 10 has lots of problems. Right now, Azure seems to be the only really successful product Microsoft has on a large scale. And Ballmer is right in that run rates are imaginary numbers. Wall Street is over confident in Microsoft's future. I don't see that future as being so rosy. Phones are down, and comprise a minuscule market share. Surface tablets that some are giddy about, are doing poorly too. Let's face it, over the last 12 months, Microsoft may have sold a total of 3 million Surface tablets. This product, whether continuing to grow or not, has a tiny group of potential users. For a Windows product, it's very expensive, as is the Surfacebook. The entertainment division is still losing money, and the XBox One is being killed by the PS4. Despite them telling us that Bing will become profitable shortly, over the years, it's still losing big money. So, no, Microsoft isn't doing that well under Nadella.