It's definitely neat, but I feel like this has been done before without success -- examples like the Motorola Atrix, Windows Continuum, and even the cancelled Ubuntu Phone come to mind. (And, going further back in time, let's not forget the Palm Foleo!) It seems like a neat idea on the surface though, so I wonder why as a concept the phone-connected-to-desktop-peripherals thing hasn't gained more traction. My suspici…
Microsoft has been trying to throw Windows onto ARM for a long time, to no commercial success, because the entire value proposition is the enormous back catalog of Win32 applications which will never run performantly on ARM. So the best bet is Linux leading the change, with Linux on ARM powering desktops and driving demand for desktop apps to be compiled to ARM - but yeah, not going to happen any time soon.