IBM was composed of a group of people who had won time and time again, decade after decade, in the battle among vertical computer players. The managers who ran IBM grew up in this world. They got selected for their excellence in developing products and competing in the marketplace within this framework. Their long reign of success deeply reinforced and ingrained the thought processes and instincts that led to winning in the vertical industry. So when the industry changed, they attempted to use the same type of thinking regarding product development and competitiveness that had worked so well
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