Yeah of course OEMs will still have to pay. That may or may not change, it is very hard to tell. MS will resist that as much as possible. However I believe that

Yeah of course OEMs will still have to pay. That may or may not change, it is very hard to tell. MS will resist that as much as possible. However I believe that Microsoft will reposition Windows on consumer devices to a 'if you got Windows on that machine when you bought it then you can upgrade it for as long as the machine works' kind of setup. They already state licenses are for the life of the device and not to the user. I have transferred OEM licenses to a new motherboard in the past, not with Windows 10 though. Yes it is technically not supposed to happen but I have never known the automated system decline a reset. I have changed a few motherboards over the years in OEM systems from Dell and IBM/Lenovo and never had a problem getting things sorted on the phone.