Nah, lots of shops begrudgingly support Linux laptops because a VM is a lot less practical, and the productivity hit would be substantial, probably, and forcing devs to make do with Windows only is bad for hiring.
If WSL really works out, though, it might be the other way around – Linux on Windows might work really well, be able to do things Linux itself can't, like interfacing with Windows-only hardware, using DirectX, and be the superior experience in total for lots of people. It will be much, much harder to justify the expense of buying a whole different set of hardware and support it if the net result is a worse experience across the board. Businesses tend to not care much about freedom of software and the like.
If WSL really works out, though, it might be the other way around – Linux on Windows might work really well, be able to do things Linux itself can't, like interfacing with Windows-only hardware, using DirectX, and be the superior experience in total for lots of people. It will be much, much harder to justify the expense of buying a whole different set of hardware and support it if the net result is a worse experience across the board. Businesses tend to not care much about freedom of software and the like.