The casinos may pay those who promote online casinos to attract more people to their casinos. People who see the stream may not know about it and end up visiting the casino because they see the streamer can easily earn money. They think that they can also earn big winnings.
It is obvious, when a streamer and a casino had a deal, the casino will provide the bankroll while the streamer promote the gambling platform. Streamer even flash their affiliate link to track people who signed up under them. This is also one way for the casino to determine if the marketing is a success.
Yes, it will be an advantage for both parties because the streamer can freely play with the casino's money. In contrast, the casino benefits from visitors who come through the streamer. Through this promotion, both of them can develop and streamers can become even more popular while casinos will also feel it.
He may just want to ask our opinion about whether it is fake money, money from referrals, or even his own money. We don't need to know that; what is certain is that we are playing with our money. And if we lose, it's our money.
I think we must know the facts behind the streamers' bankrolls. Because more often than not, those who are watching the stream will try to emulate the action of the streamer. Knowing that the money used by streamers is sponsored, then the idea of viewers imitating the streamer will die down.
The viewing given by the streamer will attract curious people to try playing at the casino where the streamer plays. And they will use more money, especially if they lose at gambling. They will be even more curious about the results and make more deposits. This is an advantage for the casino because the promotion carried out by the streamer has succeeded in attracting these people.