Matt Shea’s documentary is bookended by two stark facts. One is that the wealth of the world’s 12 richest people is equal to that of the poorest 50% of humanity (you can argue about whether 12 is exactly right, but it’s certainly a horrifyingly small number). The other is that in recent US election cycles, the fossil fuel industry has been replaced as the biggest political donor by a new force: cryptocurrency.

In an hour that manages to be more entertaining than terrifying despite sailing into very murky waters, Shea explores how a fresh breed of tech billionaires are looking to make a bold new move. He shows that in a traditional western democracy, the principle that citizens all have an equal vote and are all equally beholden to…