If they ultimately choose a MacBook Pro, they're hardly going to be the only people who decided to purchase the Apple product just to wipe OSX from it entirely to load Microsoft Windows 10 on it.
Of course, you'd be sort of nuts to make a MacBook Pro Retina into a Windows-only machine, but some people do. Some PC users out there did their research and learned that if they were about to spend $2500 on a laptop they'd be doing the wrong thing to buy an HP/Dell/ThinkPad instead of a MacBook Pro.
We’ve been rocking a late 2013 retina mbp with 1tb ssd. The hardware is fantastic, especially the touchpad!! There was nothing close at the time.
We prefer Windows, but I would never wipe osx, so we bootcamp into win8.1 instead. It’s the best solution, offering osx as a backup.
People shopping at the *top end* for a portable W10 platform seem to be going toward the convertible tablets over traditional laptops.