Linux

Chances are that many large entities are in too deep. It's what Microsoft were counting on before the backlash, and now they're probably going to do it by stealth instead.

If I have to use Windows, I want the configuration of Windows that will run on the computers at a country's top intelligence agencies.

Because sure as hell those places will have it locked down and not sending one solitary thing back to Microsoft, whether they have to configure it themselves or put the fear of the unholy into Microsoft to get that to happen.

And if not that, the configuration that Bill Gates or Mark "I put tape over my webcam and deactivate my mic for no particular reason" Zuckerberg will use.