Gambling site was built by the owner to give him the profit of money he has spent. Gambling isnt a charity foundation that give people free money anytime. Although there are some professional gamblers out there, the site owner surely will be always trying to beat all of them. Thats the fun side of gambling, where we could test our luck and skills combined against the house. Maybe you couldnt win everyday, but if you bet responsibly and patiently, you couldn't be disappointed so bad.
I think nope gambling site was built to those who want to lose there money in easy way and giving it to the owner of gambling site , and also i think that owner create gambling website to had profit yes it's mainstream that we had fun when we are playing gambling and the side of that is being addicted. And lose and then get disappointed.
Of Course, the site owners are created casino sites to make money not to give money to the players. But in this situation also making money from casino site is players talent. Those who have this type of talent they can make long run win in gambling. And rest of all is just depositing money to owners account.