Pass the barge pole
So now my "free - as in beer" AND "free - as in speech" operating system can be used within the costly, controlled world of MS. AND they want to dictate which version of kernel I use. I do sometimes have to use the MS system to communicate with the NHS, but it's restricted to one of my computers. I dual boot and keep the two separate.
In the long term, perhaps MS wants to become a services company and stop making operating systems. If this is a step to replacing Windows with Linux then I might be interested. Seems a long shot though.