But they can add some restrictions before one player can use the internal exchange like you need to achieve level X or wagered this amount.
Well said. Since they are the ones who will be facilitating of their own in-built coin exchange, then the casino’s management have all the freedom to make their own terms and add restrictions like what was stated by @24Kt. They have the opportunity to correct, and do some interventions with any of the concerns upon managing it, what was observed with other exchanges, and also focus on what customers or players have to say regarding the service as well for example their problems with high fees. In that case, it will be a win-win situation for the casino and players.