Seeing how the odds are pretty often against you in gambling as the gambling services are for making money out of you and not the reverse, do you still decide to gamble? If so, why?
It's true that gambling companies must make profit at the end of the month or year and these come from the losing money. But there are still always small and big winners too.
accepting the fact, but still gambling site was made by owners who understand the benefits and edge being the house, at the end of the day the advantage still are for those people who manage how to control gamblers emotions, they will allow some to win in order to keep coming back and most of the time they will spend everything and losses it back to the house.