It is false to accuse demo games for something, as each gambler is an individuality and searches in gambling only what is interesting to him. This is the same blind accusation, as saying that video games motivate people for violence. That after playing shooters, people would go on the street and start shooting people like they did in video games. If a person is irresponsible and stupid, then he would break a ball in an empty room with soft walls. Same does demo games, if a persons is naive, stupid and irresponsible, then he would think that winning in games with real money would similarly easy as in demo games.