If not Arm, which architecture next for IoT

So let's assume billions of chips are going to get sold for 'IoT', what ever that might be.

BY Steven Bush, Electronics Weekly, Jul. 19, 2016 – 

And let's assume they were going to have Arm Cortex-M_ cores in them.

Now that Arm is no longer independent, I can see two futures:

Softbank keeps Arm independent, and CortexM_ continues to be the core inside things.

Softbank tweaks Arm in some wrong direction, potential licencees get nervous, and they scout around for something else.

So, what is that something else?

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