> How will that stop Google
It won't. It'll only prevent these devices from getting different OSs.
Also, keep in mind I'm not talking about Android. I use Ubuntu every day and all the pieces are in place for Ubuntu-based fully-functional (as in "you can work exclusively on it") ARM devices. Windows on ARM's key "advantage" is the ability to run Office, but since Linuxes/BSDs on ARM (or MIPS, if you are so inclined) can run the full desktop software suite just like their x86 counterparts (perhaps more slowly, but that's beyond the point here), their advantage is negated. Their only remaining advantage is being able to run Microsoft Office.