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.