They aren't. Almost most innovation they've tried to implement in the market have gone underappreciated or forgotten. That means they're "not known" for their innovation. I don't think Nokinside is saying Microsoft is not an innovator.

Then again, most of their money comes from products that are specifically borrowed concepts, competitively forced into dominance, with more purchase incentives than their competition, and before other companies could even get a foothold. So maybe that's what Nokinside meant.

Either way, I'm not surprised when people kick Microsoft for a lack of innovation. Nadella's focus on increasing innovation at Microsoft alone is evidence that they haven't been doing enough.