There are two important things that a casino has which can be a target for hackers, I learned this from the last discussion I started,
https://bitcointalk.org/index.php?topic=5538222.msg65280221#msg65280221The two are - Money which they have, and then the data they hold obtained from KYC.
There is concern about the two, but different levels of importance placed, I think. The data they hold and risk losing is more important to gamblers than the money the money they have, and then to the casino, I believe it will be that they have more importance to the money than the data of the many gamblers. Now based on this, do you feel a casino is more likely to be careless with people's data than they will with money to hackers because most hacks seem to target money they have more?
If money lost on casinos due to hack attacks it will be customers money because casinos don't leave their own money on the platform, there is no reason to do so unlike crypto exchanges where stakes are ongoing and also liquidity things.
I think both data and money belongs to customer, it's true that casinos can reimburse lost funds with their own money but believe me customers money will be the victim not casinos money.
If someone won a jackpot they will have to pay him or her straight from their own account, the money isn't waiting on their platform for someone to come and claim.