He wants all the games

My five year old boy always loves games. Whenever he will see some TV commercials, he will stop whatever he’s doing and watch it carefully. After that, he will shout, “Let’s buy this one, please, please, please”. Even when he will be playing on his own laptop, and will click on some commercials from particular kiddy websites, he will ask that if possible he will buy all of the games that he discovered. Just like when he clicked the new psp game commercial wherein he asks that if possible he will buy that game as soon as possible because he “really love it”. So as not to argue with him, I always say “yes” to whatever things and whatever games that he wants. If I will not say anything or if I will say that I don’t have money, then, it will be a big problem because he will not stop not unless I will say “Yes” to his request of buying almost all games and everything that he wants.