ARM has had an easy ride so far.
Now Intel prioritizes their mobile/atom SKU's much more than before.
ARM is going the way of AMD soon...playing second fiddle to Intel.
I very much doubt that. ARM isn't like AMD in the sense it provides a finished product like a CPU or GPU and sell them directly. Rather, it just licenses out the architecture and several chip designs to anyone who wants them. Numerous companies have taken up on that deal, including Qualcomm, Apple, Samsung, etc., who then go on to use the licenses as they please. Usually integrated as part of a larger product and usually with numerous customizations and enhancements of their own.
So in order for ARM to go the way of AMD, all of the companies that use ARM's IP need to perform poorly. Very unlikely to happen IMO. These companies are very well managed (relative to AMD at any rate) and are much better funded. Samsung even owns its own fabs*. They are in much better shape than AMD has ever been. Furthermore, then won't get into patent entanglements with Intel either, since it is a totally different ISA. I expect the Intel vs ARM licensee's as a much more interesting, and more competitive fight.
*As Jerry Sanders once said, "Real men own fabs," so I guess Samsung are full of real men right?