Good luck with that. Even though it is possible it is much harder than just to ignore the problem and pay the Microsoft tax. And if you're going to buy a computer without windows why would you then buy Windows separately, that's much more expensive, and people that go out of their way to buy machines without Windows likely don't run Windows at all.
You can have a windows partition on a machine that is primarily Linux. First install Windows and then install Linux and there's no issue. Windows 10 today does not require a licence to operate it will not lock you out if you never activate.
