I do agree that everyone looses in the long run.It does not matter of professional or immature gambler.House always win in the long run everywhere whether it is online casino or offline (physical).When two professionals compete with each other there too only one of them wins.
How can you possibly think that? You know how many people are rich, or getting rich because of gambling, how many people have retired from gambling and are still rich? Of course in a heads up game someone loses, but still they are up millions, if winning millions is losing, I want to lose.