The thing is that we are humans and not some sort of AI, and as such we do not operate logically and instead we use what we feel as a way to navigate the world, so a person could have the perfect plan when going to the casino about the amount of money they could expect to lose, but if something happens to disturb their plans then it is easy to just leave that plan behind and start doing what it feels right and then find themselves suffering a massive loss they never saw coming.
That is where we differentiate because humans have emotions and AI does not. As long as they code for that thing, they will do it and not overwrite it, but in our case, even though we have a concrete plan that we need to follow, our emotions tend to change and can easily overwrite those plans unless you have proper discipline, which most of us don't have. That is why preventing it is really best, like bringing only money that you intend to lose and nothing more, so that you'll force yourself not to play more than that money.
Exactly, the issue is that the tactic of leaving behind our valuables and credit cards may work when we are gambling at a physical casino, but if you are gambling online this is not going to work as you will have on you all your money all the time, so someone that does not have the discipline necessary to only spend the amount they set for themselves during that session has a huge risk of spending way more than that at some point in time, as the temptation to keep gambling by making a deposit with fiat or with their bitcoin wallet could become too high.