This seems like a more preemptive move than a reaction to any problem.
If someone wants to run Arch under Windows, then one can use Free software like VirtualBox and adopt any version of Arch, running more "properly" and not under Microsoft's direct control. Of course ...
It was all about Microsoft all along. Canonical just got paid to play along and essentially promote Windows (or tell people to stay with Microsoft and Windows). Canonical sold out. That was nearly a ...