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You have got to stop thinking about conventional economics here. The IoT bandwagon is impervious to conventional economic considerations. After all, folks are going to just be so happy to pay an extra $25 for their light bulb, it doesn't matter if the ASIC price is a little high. The fact that it's going to be part of the IoT relieves it from those pesky metrics.
If it's connected to the Internet, it MUST be great!!!
I was not thinking about conventional economics with repect to this tiny "bitcoin computer", I don't have enough fantasy therefor.

I was just thinking about if one could build a competitive real miner based on the 21 inc chip. And I guess the one would have a Capex issue compared to e.g. miners based on BM1385 chips.