This is stupid, some people play video games all day but thats their fault not the video games themselves. Its like someone eating carrots all day and then when they get fat say OMG CARROTS MAKE YOU FAT!!!. This is even more rediculous with the popularity of the wii which encourages you to burn calories with games like Wii sports and Wii fit.
The Wii doesn't no where near make you do as much excercise then what people should do.
But yeah, its down to the person weather they want to go out and excersise, or stay in all day and get fat, not the gaming market.