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OS/2 failed because IBM has had this aversion to marketing over years. It is only recently that IBM appointed VP of marketing. Prior to the OS/2 Warp launch IBM had announced that it would launch a big advertising campaign But about a week prior to the IBM pulled the resources. There was lot of people and companies that were considering switching to OS/2 Warp. But MS launch a huge campaign for windows 95 and rest was history. IBM should have pressed it's advantage with client server computing. OS/2 was years ahead of Windows at the time.