Apparently when Satya Nadella took over, Steve Ballmer told him "don't screw up". In terms of stock price and profits, he absolutely hasn't. In terms of producing products that consumers might actually want to pay for, he has failed completely and Microsoft has never been in a worse position. But those two things are completely disconnected now so it's fine.
Why have windows calculator when you can have windows calculator with AI guess what you want to calculate, get it wrong, spy on you, and use that spying to serve you targetted ads all at the same time? #innovation