~snip~
Logically thinking there are gamblers that are winning that is why they keep on participating on this sites.
though they are winning sometimes(in which very limited for sure) also losing is the most part of it right?so in that sense is it is not the winning that bringing them back but only the desire to win.
On the other side, the house too are winning also that is why they are still operating. Whatever happens it is more likely that the house will still be winning and we can assure that the owner of a gambling site is earning profit massively.
if the gambling site is established and legit then for sure this will earn more because Gambling sites owner nowadays are profiting because you can see them staying here for more than years means they are contented in what gambling bringing them.