Amazon and other online retailers are slowly bleeding big-box electronics stores to death, a fact made all the more obvious this week when RadioShack announced that it was closing down 1,100 stores. Paul Kedrosky points us to a graph put together by The Financial Times that shows how the total overall footprint for major electronics retailers in the United States has been shrinking for the past several years. The total number of electronics retailers in the U.S. has been on a downward trajectory ever since 2009 when Circuit City liquidated its last outlet. Best Buy and Apple have held mostly steady but the recent RadioShack closings mean that the number of electronics outlets in the U.S. has shrunken dramatically. The Financial Times’ graph follows below.