I guess their plan is not anywhere close to attracting more investors... they are a casino, and they want to attract more players, and they doing that by investing in different promotions and on-site perks. BFG is just one of the perks... by holding them (staking) on the site you get some coins, or you can stake them to get more BFG. You can also use it for gambling if you want to.
Maybe they will change the course one day, or maybe not... I guess we will see.
Yes, you are right. All casinos want to have bigger profit so they will do many things to attract more gamblers to play in their sites. But they also gives another benefit to their gamblers to be an investor by staking their token. We see that the investor can increase their BFG token while they playing gambling. That is the advantage they can get from the staking.
While BFG token now is at #992, it seems still difficult to lift their position. But everything can be possible to happen so they still have a chance to increase their token price. Maybe that can give them a better position in the market. People who already invest in their token will get their profit when that is happen.