I think most OEMS would rather do without the very real technical advantages that Intel brings, than be stuck with Intel. If they could switch to ARM for PCs easily they would, and there's no way they're going to sign up for Intel chips on mobile devices, at least not unless it starts making ARM itself.

Say Intel is a process generation ahead of everyone and has fancy tri-gate transistors and what have you first. Is it really worth abandoning all that ARM gets you--the ability to design custom silicon, bid different foundries against each other, etc?