Okay, if you were to stand back at take a look at the situation as a whole, you'd more than likely come up with two solutions. The concept of Pokemon - not the video games, but the TV show, merch, toy figures ect. - is geared towards young children. Take the TV show, you don't need reading skills and the storylines aren't complicated at all. The language used in the show is basic, so kids can understand it. Merchandise, like toy figures, teddy bears and the sort are made so the kids can enjoy Pokemon when not watching TV.
Now, the other side of the argument, is the the video games. If you were to stand back and forget everything you knew about Pokemon, including TV, mang, everything and then pick up the video game as your first Pokemon experience, I'm sure you wouldn't say the games is for children. Anyone, in reality from 14+ would be able to 'seriously' play Pokemon, while the younger kids might fiddle around on it. I mean, c'mon, gambling? Good role-modelling for kids? Even the Pokemon are sophisticated what with all their stats and the Evolution process. When you think about it, the games can't be fully enjoyed untill the player reaches the stage where he/she has a full understanding of the game. That time comes at the age of around 14 or so.
To drive the point home, the TV show gives Pokemon a 'childish' feeling. If Pokemon was nothing but the video game, I can honestly say that nobody under the age of 11 would be playing the games.
Pokemon Games = All Ages.
Thank you.