If you think that's bad, come to NYC. GameStop is almost as bad as Starbucks now. According to Gamestop.com, there are over 50 stores within a 25 mile radius from where I am. The search results max out at 50, so who knows how many there actually are around here?
Of course, there are about 20 Best Buy stores and about 20 Circuit City stores within 25 miles, 15 Blockbuster stores within 5 miles, and plenty of video game/jewelry/cell phone stores in Chinatown and the Fulton Street Mall.