This Sarao always reminds me of Ross Ulbricht of the bitcoin based Silk Road fame. For those who don't know, Ulbrict is in jail for 40 some years for running the biggest dark market drug and anything dealing website. Think of it as the Ebay of black market. At its height, he was holding 80 million bucks worth of bitcoins and when the Feds took him down, he lost all of his costumers' money too. The Feds auctioned off the bitcoins, making it rain. This dumbass was stupid enough to run the hugely illegal website from inside the USA, from San Francisco. He was living with room mates in a 1.5K rent and didn't own anything special...
Anyhow, in both cases we have a tech genius, who makes tens of millions using the internet and his ingenuity, but he failed to use that profit for something good, and were stupid enough to get caught, although there were warning signs plenty... In Sarao's case, without the 100 emails complaint I doubt they would have picked him...
Well, Ulbrict is already in prison for decades because they made an example out of him, and Sarao has a very good chance of joining him for at least a decade. All the money will be lost in his case too...