Fair enough. Who knows what Parallels or MS may cook up. I just don't see it being a smart move cost wise for Parallels, and nay sales for MS would be rounding error and not worth the costs.
It really depends on how MS views VMs. B&Ms see boxed software versions (which come with NS support) or as part of a PC that runs what an OEM licensed version. It will, in general, only work on a specific machine, such as when you buy a Dell you can't migrate the image to a VM, for example, in most cases. That OEM license is tied to a specific machine, and if Parallels has to do that it complicates life for them.
True, but Dell licenses Windows for PCs that come with Windows and pays a royalty; soemthing MS may want Parallels to d rather than just sell a retail version.
From my experience with their forums it's mostly a community support forum with limited parallels input. That's a lot different than supportting an OS you sell and have to Dela with install, crashes, missing drivers, etc. They o offer phone support but on a paid for basis.
Plus, every time Apple releases an OS update that breaks something in Parallels they now have to figure out a fix for the OS they sold rather than just say "it don't work." The expectations of end users are different if tehy buy an OS with the VM, IMHO, and will expect it to work like a dedicated PC, something Parallels doesn't fully do.
No doubt they have a lot of experience making VM work with Windows but that is different than supporting an OS. My guess is teh costs would not make it worth it. Their money is better spent on improving the VM and letting users get Windows elsewhere.
"Not break things" is teh issue as I see it. Either tehy work with Parallels to keep teh VM version working, which costs money, or they keep tailoring it their hardware design which may beak things. From a cost perspective the latter is more attractive, since having an ARM version that works on Macs in a VM requires a bit more than just cashing checks.