I think it must be an accumulation of stimulating factors that make certain types of bets seem attractive to us, based on our personal tastes.
You may be right about the stimulation of certain types of games that make gamblers motivated to continue betting. It is not only the winnings that make gamblers finally decide to bet and play the same game. Like in sports betting, there must be a motivation related to the hobby of the related sport that makes gamblers continue to bet.
In casino games, maybe the winnings obtained can be a motivation for gamblers to continue playing. Like slots that give wins at the beginning and make gamblers want to continue playing slots.