Windows RT. It's over.
Windows RT is over. It has failed. OEM have all left.
I think it's time for Microsoft to say:
"We're going to focus on destkops"
"We're going to focus on PC"
This catch-up game to Apple and Google just isn't working for them. They're spending billions and still no one wants to buy Windows RT.
Spend some time trying to make Windows PC users actually want to upgrade their OS.