Wait until you see the retina mining camps they set up in China.
Unlimited money!
If you control one of their devices, you could always just modify it fake a live input.
Even if they intend to control the scanners themselves, corruption can probably thwart that. This comment (https://news.ycombinator.com/item?id=29001214) makes it sounds like they may be operating in countries with endemic corruption.
The big logic flaw here is the same one as when the Soviet Union collapsed and shares of the state owned enterprises and assets were sold to the general public: poor people sell the assets to the wealthy.
The entire thing is strange, and doesn’t make sense.