Or, perhaps in the future (Stake) seeing these services have such a big transaction.

Due to that, they created an exchange service on (Stake) with around a fee 2-5% on their casino. After that, the service provider will be closed by their own due stake already having their exchange system without blocking the the account.

IMO, no need to block but take these as the suggestions for casinos for their service.

Nope, there is no correlation with these. It's just tipping (Multi-account based on device + IP) meanwhile bonus abused is based season each individual activity.