All those people in that picture are ignorant about online gambling? Why they are waiting on queue to gamble such a stupid thing and more we are not going to have any fun with such crowded place.
Perhaps those people hasn't found online gambling yet, or the games that they want to play only exist on a traditional casino, or they wanted to get a fell of the ambiance (free drinks, talking to stranger/friends). That's why you can't really blame them and it should be take as case-to-case basis. And as you can see, even the answer here are very different amongst individuals.