Windows 10 with telephony stack
Devices like the Surface GO with LTE seem to be the future. Why does Microsoft just not add the W10M telephony stack to regular x86-64 Win 10 and let the future Win x86/ARM laptops with 4G make phone calls?
Not convenient to carry in your pocket but with voice calls less and less these days, would be the evolution of MS telephone aspirations. It might even be successful.