That's the real picture and that's the reality, so if you are going to a gambling site thinking that you can win and turn down the table against the gambling site, you are hallucinating, the system is well placed for a gambler to lose not every time but most of the time.
How about those who won big? is that hallucination? Reality is most of gambler loss but man don't forget that there are still player who accumulated profits. They maybe rare but still they exist. So it wasn't hallucination, it's just their luck isn't enough to become one of those successful and lucky gamblers.
I am sure that there are people who can win big in gambling and that is not a hallucination because they really got the money and take it home. Yes, I am sure that there is a gambler who can accumulate profits and make a lot of money from gambling but if we compare between people who are losing the money, then people who lose money still too many than them.