Childhood trauma?
I think we forget how hard it is for normies to conceptualize the gamblers fallacy, it just is so against human nature to ignore past patterns, it just does not seem possible that 8 Player wins in a row doesn't mean 'SOMETHING' about what is to happen in the very near future, How could it not, it just happened!!!
Also loner adults who have never really been able to look at themselves in the mirror with pride of accomplishment, a big casino win changes everything (in the mind of the self-perceived-perpetual-loser/almost was-been).