I'm suprised they picked a usb charging plug. I really want to see some ROI math on their equipment.
I'm not expecting ROI on any of those but I could be wrong.
It's the best device after a router. The cell phone thing will be done in Phase 3 so no need to worry about that for now.
Why are you expecting ROI? This is not about ROI. It's about decentralization. Unless I get it wrong. It would cost 35$ extra to get the device? If yes then it's not worth it. But the extra 8$ for a router will be worth it. If that's their expense and nothing for the consumer then it's damn good!
If your chips are not revolutionary performers, how does this lead to decentralisation? Those chips spread across 100,000s of devices in the best case still have to compete against the rest of the network running concentrated data centres of the same chips which were deployed for less and have lower electricity costs. Those centralised data centres are going to be able to run harder, longer and more numerously to those devices. And think about it, if you manage to get this into 100,000 products with a 50GH chip, even that is just 5PH. 5. Bitfury has been building ~20PH facilities
from scratch for years. So in the best case these decentralised devices (assuming 100% up time) can compete with 1/4 of a single Bitfury facility, or 1.5% of current network capacity.
While its a noble effort, I'm not sure its a shrewd business decision. That said, maybe they have totally different numbers which paint a different story.
Edit:
But the extra 8$ for a router will be worth it. If that's their expense and nothing for the consumer then it's damn good!
The consumer still has to pay for the electricity to mine, and only gets a portion of the revenue in return. IIRC it was suggested 25% to the consumer, 75% to them and locked at the chip level. So, mining would be 4x more difficult to operate at 'break even'. That would lead to non critical devices (USB chargers etc) simply being unplugged when not being used.