I've been preaching this for years... if MS adopts Linux, ups their GUI effort to create something useful atop Wayland, while providing a seamless way to run Win32 apps until the world migrates to Linux on the desktop helmed by Microsoft, they will completely destroy Apple on short notice.

It would be a major, revolutionary move for Nadella to do this and I doubt he has the heft or charisma to sell this to the board/shareholders, but if Microsoft goes full steam ahead on Linux and dumps Windows, it's buh-bye Apple and everything they ever produced. They can probably even eat into Google's droid pie.

Ditch Win32/NT, port the cash cow called MS Office to Linux and polish a Windows-like GUI atop Linux/Wayland in the best way they can, be it via Qt, GTK, I don't care - just get it done... and set the world ablaze and free.

Bet you they could probably deliver something in under 3 years.