I think everyone has experienced the thought of almost winning, but the thing I'm worried about is when they lose and think like this, plus in the previous gamble they almost got a big win, then this allows the player to gamble again by depositing their money again to gamble again because they think they almost won, so they think in the next gamble they will be able to win, I have also experienced this and it's really sad when I remember it hahaha.
It's true what you said, casinos are built to make money, so the chances of winning that players have cannot be greater than the casino, it's only natural that players experience more losses than wins.
Certainly, that sensation of being so near makes it much more difficult to halt it's as though the mind mislead you into believing the next one will strike since the past one was almost there, I have also been there in those times it is difficult to go. The system is actually designed to keep you in that cycle, Winning seems doable but the house always has the advantage, Knowing that helps even if it, doesn't always simplify opposition.
It's part of what a responsible gambler should take note of and learn how to control their self because if they don't understand those strategies that is pulled by casinos, players will always be reckless in their gambling activities. New gamblers always fall victims to idea that they can win on the last minute and to even make it more interesting, while gambling, if they are about to give up, the casino will coincidentally allow them to win but the next wagering will result to lose.