Thanks for checking. I was looking around and everything is fairly vague. Given there are so many online crypto casinos around, there has to be a decent incentive for gamblers to stay with Betfury and I think the BFG mining is one of them.
If sports betting is included in the reward pool, then potentially, the reward payout is sustainable, if not, it is more like playing chicken and see who ends up holding a bag of BFG with no utility....