You purchase bitcoin through purchase electricity, thus bypass the exchange. But the cost of that machine is much higher than the electricity cost, so it must be sold together with home electronics
But micro transaction kills bitcoin network, so those micro transactions will be merged together at IOT manufacturer's central server and settled from there
So the manufacturer will exactly know what you are purchasing, reading etc.
This is not good for privacy.
I think this will not be very successful, probably just an attempt of offloading unneeded ASIC chips to dumb enough people..
A society of home electronics, trading against each other using bitcoin as official currency. But what you can buy from another machine?