GameStop is in the process of closing many stores in the United States. Retail stores are losing ground with each and every day due to digital stores. People do not buy retail versions of games like the used to. Digital copies are usually cheaper and easier to purchase, especially when you can get a high speed internet connection pretty easy these days.
More than fifty stores will be closing soon, all around the United States. Many people will be losing their jobs due to the closure, which is very sad indeed. Of course this is not a surprise since GameStop went through an overly aggressive expansion over the last years and its stock is still declining.
GameStop will probably still be here for the next-generation, but it is highly unlikely to go further beyond that. You can check the whole list of the closing stores here.