That should be part or the business where there is always a risk for the casino side. They have adopted crypto as payment method, so basically they are ready for the risk. There is also bitcoin as one of deposit method, means that price changing is not something they are worried about. I also believe there is always a way to minimize the risk of price changing. They can simply use direct conversion of any crypto deposit to fiat like what is implemented by some casinos.
Well, its very simple if they don't want to face high risk with Crypto payment, just add more stable coins from any network, we know currently we find some of stable coin from BSC, FTM, ETH etc network. Add some of them, it will be good options than just USDT on trx network only. Everyone happy to pay less fees on transactions, if more options coming it will be good, right

The more the option the better, as that would give the gamblers to choose which coin they'll use for their gambling needs. As for me, I'm already happy with XRP and USDT Trc20 as it's fast and I was able to save from the transaction fee. However, it's not that significant though as we only talking of a dollar for a transaction fee while we gamble at least $100 dollars for a game, particularly in sports.