Everyone indeed looses on the long run and this is because gambling is not made for profit, its just to let you enjoy it and try out your luck sometimes.
I think that you are right about that the most do and that gambling is for fun and not to make money because only some people have this much luck.
Not everyone looses in the long run i know there are some who can really make it to win after playing that long i have a friend who is addicted to gambling and he always spent 15-24 hours playing it without using bots and he can make a good profit. He always says that just enjoy the game what ever the result it don't just depend on your luck.
That's nuts how was your friend to gamble for straight 15-24 hours? I can't even stand to gamble for so long and he did manage to do that. Your friend surely makes gambling as his passion or a total source of his income. But if he is just enjoying the game for that long why not he manage to look for some other hobbies like playing computer games, he totally is investing in time to make his chances bigger.
It's not normal anymore because it's already addiction, even if he makes good profit from gambling but he still loses something. He lose his time for failure to balance in living his life and the worst thing that might happen is when he lose his health. What would your money's worth if you cannot enjoy it anymore because you spend all your winning in medication.