Profi gaming

In last few years is growing phenomenon of proffesional players who earn money for live by playing computer games. How it works? Who pays it? Lets think. They are playing. They are playing games on tournaments, and those who are good earn money by winning. Who pays those money and why? Its Game and hardware producing companies, who usually gives something as prize. Its good propaganda for them, because about big tournaments are talking many people. But who pays it? We, because its a form of advertising, and advertizing is allways paid by custommer. So when you see that XXX given something as prize to tournament, dont think they are great, think if i buy anything from them, i am paying part of that prize.