Wait, if the player is the owner of the casino... then the money he gambled are not exactly 'won'. If you know what I mean.
He was playing in closed loop imo. And money he won are probably won't be withdrawn and used to play in other casinos etc.
dogedice.me is the owner of bitdice not the player jackie_chan who won.
That user played for months, wagered each day like 1k btc and was loosing up to 200 BTC, then getting it back with profits and again and again. He's regular in chat. Everyone who's regular to BD know him.