I don't understand Microsoft any more. They are making all their proprietary lock-in stuff open source, and they are alienating their user base. I've heard a number of long-term Microsoft users express frustration the user experience (not to mention the Windows 10 upgrade shenanigans). It was bad enough that my dad, a long-time lover of Windows NT (he liked its VMS legacy) switched to a Mac and loves it.
I feel like Microsoft might be pulling a Sun here. However, I'm sure a lot more likely to use Microsoft stuff if I'm not tied in to Windows.
As a counterpoint, I've been a full-time Linux user (desktop and server) for well over 10 years, with server use for 20. (I'm 40, so while others have used Linux/unix longer than me, this is the entirety of my adult working life.)
With the open-sourced .NET stuff, I've been active in pushing for projects I touch to use it. And, I now dual-boot Windows 10 and Linux, actually using Windows for daily work for the first time in a decade.
Open source C#? Sign me up. And I really do like the Windows 10 interface. The telemetry stuff just doesn't bother me. I think it's largely a red herring.
(And, furthermore, I think privacy stuff really has to get nailed down in laws and society, not just with technology. Going just for a technical solution means you'll always be chasing the answer. Encoding it in laws, and setting people's societal expectations, means you get to set the answer instead of follow behind.)
I feel like Microsoft might be pulling a Sun here. However, I'm sure a lot more likely to use Microsoft stuff if I'm not tied in to Windows.