Qualcomm's platform for Windows has yet to become competitive against those from AMD and Intel
Arm-based notebook PC processor vendors will need to step up software investment and branding efforts to compete effectively with x86-based vendors Intel and AMD.
Because they need a much stronger arm cpu to handle the emulation/jit whatever they use to run windows.Or maybe price them competitively relative to performance. Pretty much all the Windows on Arm devices cost upwards of £1000, but were easily matched by devices that cost less than half that.