You guys are missing the incredibly obvious.
At the time of the ICO, the amount of crypto raised is priced in USD and the token is valued in USD. However by Dean's own admission he holds the crypto and never sold for USD. This means if the value of the crypto goes up (like it has) Dean personally gets free money. But if the value of the crypto went down, Dean can just fold betking up or even just say it can't afford to do buy backs. Which is true.
So the whole betking ICO was just a way for Dean to expose himself to profit if crypto went up, and expose himself to nothing if it went down. This is why he has no real reason to work on the site, it was never about it.
But being blunt, it's completely investors fault for buying into it. The terms were straight forward and obvious. They bought into the ICO mania, and will need to pay for it.