Imagine if someone made the opposite of this device, an energy generating device which could supply you with revenue [after the subsidy is paid off] and was not restricted to any particular currency ecosystem.
It'd be like putting a tiny solar panel on your retail consumer grade router, one that degrades very rapidly over time, and generates electricity at a higher cost than to simply buy it (from industrial grade dedicated solar parks), in a world where you can send energy as easily as sending email, or for that matter, bitcoin.
It's ridiculous. I'm curious about the bigger picture because they have a stellar team, backing, board and bank account right now.
"Hang on, I just rode my bike to the office, let me plug it into my parking spot so I can discharge the capacitor and get paid for the ride up here and I'll come up to your office."