if the day will come when the BET fantasy token can be purchased, the "player investors" will of course stop playing and simply buy the BET fantasy token for cheap!
Because if they play to get 10,000 BET fantasy tokens they will statistically lose $800!
Your argument is valid if users only use the EOSBet site to earn dividends. However, EOSBet is a growing online casino, and there is a probability that this site will have enough games to entertain many users. Again, the BET token price will depend on how well they gain profits -> it means to acquire more user base -> it means increasing their product quality and service.