Gambling and pofit in the same sentence is something you dont here everyday but certain games allow you to make some money like poker, but when its you against the house that should be for fun because it never ends well as the house always wins.
Where did you get the information that the house always win? If that is the case, there shouldn't be a single player playing dice or roulette or the like because they will just end up losing every time they play it.
I guess he was just saying that the house always get profit by the end of the day even there are gamblers out there wins there are some that loses which the house gets their bet. But I agree that not all the time house always win. Some casinos get bankrupt and not all the time they are always winner by the end of the day, maybe because they don't have enough knowledge to operate that kind of business or maybe they don't have enough experience on how they will handle the house to have a successful business. We all don't know the history of every house, we just playing because we are just an ordinary gambler. We lose and sometimes win. But one thing is for sure, for me, we cannot make gambling as a profitable activity.