Casinos really don't like the hit and run types and they do everything they can so you continue to play. No windows, no clocks, flashy lifhgts, alcohol, and free food. Keeps people staying at their hotel and continuing to play until they usually end up in the red.
So true, that is the reason why I don't think most of the gamblers will be able to win a huge amount unless you are gambling outside a casino like a lottery or online gambling sites. In my case, I don't usually win a huge amount since all I had is losses after losses, if we will be talking about the long run, in terms of shorter terms, I sometimes won huge amount though it usually ends up in the same place the next day.
Usually winning will become a temporary thing that we get if we can't stop while we are ahead. The intention to continue playing, mostly, will lead us to lose our winning money back to the casino. That is why most gamblers have a bad portfolio in the long run. I myself experienced the same thing. When I am able to get a relatively good amount of money through gambling but have to lose it again at the other days.