Betfurry tokens are held by people because holding BFG gives them constant staking rewards. These facilities motivate gamblers to hold BFG. The BFG decided to use their own strategy. It's almost commonplace now so it's doubtful how successful new casino sites will be using these same tricks. Successful projects are always those that come to the market with new concepts and facilities. But copying the concept from another project does not bring good results
Have huge doubts that those staking rewards motivate anyone for a long holding. It is more like people better hold them, as they dont cost a lot and the amount they will get from selling wont be significant. Buying 100k BFG tokens ( around 1.7k bucks) will give daily profit of less than 2 bucks. Questionable motivation to me

Imho, BFG tokens are not about gaining rewards from staking. They are more like trifles, users support of their beloved casino, like a complement from a chef in a restaurant. You dont expect much, but receiving them creates warm feeling about the casino.
Of course staking reward is enough of a motivation for investors to hold long time although everyone holds long time hoping for a big profit but no one wants to miss it when staking reward is also available from there. This is another motivation for investors. However, since those coins have to be deposited in a specific platform to get staking rewards, it has also a lot of ricks. So if you think about it again, this problem also destroys the motivation of many people
I think that as a gambler, and in general any person, when deciding where his money should be stored and in what currencies, or cryptocurrencies, always takes into account the risk of losing these funds. Moreover, for different amounts, the risk of course can be completely different. It's one thing when you have $3K-$4K on deposit, for example, in Betfury, and in staking. And completely different risks when it is, for example, $200K, not to mention a million dollars. It is clear that the risk of such money a person will be minimal. But the interest on deposits, of course, will be much less than on small, but too risky deposits of your money.
If I understand the situation correctly, the majority of players who have a deposit and stake in Betfury still keep relatively small amounts on deposit. Maybe only devs have some big deposits.