Intel & ARM
One thing that is not mentioned a lot is that Intel has DEEP pockets through their monopoly in the data centre as well as PC market. They will p̶u̶s̶h̶ (buy) their way into any market they want to. Just look at the amount of money they poured into the tablet market to win designs but ultimately have failed to make a dent in sales. Will they succeed will depend on if they want to earn lower margin/high volume or charge an ARM and a leg for funky whistles that nobody needs (a la VPro anyone?)
Also with ARM you can go to whoever makes the ARM widget that you want whereas Intel will make a small number of variations with Intel IP in everything and expect you to pay for it and that will be the only game in town.
Note that the same people who currently churn out PC's and their ilk will also be in the IOT market and they will gladly take the Intel marketing funds if they can as they are so addicted to this to keep themselves solvent.