This already exists in the Windows 10 store, Microsoft clearly doesn't have an issue with emulators... So it all comes down to Nintendo and whether they can convince Microsoft or not.





Keep in mind: Nintendo has tried (successfully) to get emulators off the Apple App store, and has likely tried (and thus far failed) on Google... so what side of the spectrum will Microsoft fall under?



(Edit) OP, also NESbox is not just an NES emulator, it's a NES, SNES, Genesis, and Gameboy/Advance emulator.