Video game spending worldwide will exceed $74 billion in 2011, with that total reaching $112 billion by 2015, according to an analyst study.Software sales will make up $44.7 billion of the $74 billion total for 2011, The analyst firm estimates that, over the next five years, gaming hardware’s market share will remain constant, while software will lose part of its share to online gaming, with online gaming seeing a 27 percent annual growth rate through 2015.