Well sometimes I see that act as too much laziness and over trusting on the casino to secure their funds, same also apply to some traders who leave huge balance on exchange, some time when anything happen to such site, their become crippled because they will have nothing left to fall back to at the end, because I don't see the reason why anyone will leave such money on a casino balance.
And still take the risk to display such balance to the public this act will attract hackers to start targeting such accounts and once their get hold of it the money is gone, but if you have them stored in your private wallet it won't be easy for third-party penetrations.
I will never support the idea of gamblers leaving there money in a casino when they can always remove there funds and use it for whatever they like than leaving there money there because they have been using the casino for so long thinking the reputation can not be tarnished. Gambling has a lot of aspects and we need to know what we are doing or else we are going to be missing it big. We supposed to have a particular money that we can always use to make bets without going to touch our major money which we can use to do some certain things without issues.
I also agree with what you say, because the truth is when we leave money in a casino or in an exchange or something like that, it's not our money, it's the casino's money. It is excahnge money, many things can happen, you can be unlucky that everything is fine and suddenly there is a hack and the funds are lost, there are places like casinos that when that happens to them they do not compromise the players' funds , and if the casinos rob them, what they do is put their money there for them, because they know that they are their clients and that they should always be fine, now, a very common case that happened something like this was in stake.ocm where they discovered a large amount of money, and those things at that time because they suspended for 1 hour or 2, they reviewed everything, and then they restored the casino services normally as if nothing had happened, and the players' funds were not affected.
Things like this also happened in an exhcnge, a very old one where they built or closed and people were left without their money, so from that moment it was understood that we have to have our money in our power, there is no other way, it that is in our hands with our own private keys we can say that it is our money is ours.
There are many people who think that having the money on a platform is safe, and they can give the assurance that it is, and that they have great security in its custody, perhaps that is so but basically things are as they are, as it is in In reality, it is not our money, it is in that platform, be it a casino, be it an exchange, things will always be and work like this, you can imagine that one has some money, bathing and suddenly being told that the exchange, or casino, has gone bankrupt, Or does nothing always work again? That's enough to make you desperate, and that has happened on many occasions. There is nothing better than if you have money in a casino, then you withdraw and every time you go to play or make a deposit.