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    Schumpeterian Competition and Diseconomies of Scope: Illustrations from the Histories of Microsoft and IBM
    18 Mar 2011Working Paper Summaries

    Schumpeterian Competition and Diseconomies of Scope: Illustrations from the Histories of Microsoft and IBM

    by Timothy Bresnahan, Shane Greenstein and Rebecca Henderson
    Firms dominant in one era are often less successful in new technological eras, despite being able to exploit economies of scope and other incumbent advantages. What leads to this Schumpeterian creative destruction? Researchers Timothy Bresnahan (Stanford), Shane Greenstein (Northwestern), and Rebecca Henderson (Harvard Business School) look to IBM and Microsoft for an answer. Key concepts include:
    • Traditional explanations for creative destruction include the view that an incumbent, fearing cannibalization of its own business, under-invests in new technology. Another explanation has an incumbent, blinded by its own biases, slow to see new opportunities.
    • Looking at the introduction of the PC and web browser, the researchers propose a third explanation: that initial successes by both IBM and Microsoft in their respective new areas was stalled by corporate resistance after they requested more resources to grow.
    • In IBM and Microsoft's case this conflict eventually led to control of the new business being given to the old and, in both cases, effectively crippled the new business.
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    Author Abstract

    We address a longstanding question about the causes of creative destruction. Dominant incumbent firms, long successful in an existing technology, are often much less successful in new technological eras. This is puzzling, since a cursory analysis would suggest that incumbent firms have the potential to take advantage of economies of scope across new and old lines of business and, if economies of scope are unavailable, to simply reproduce entrant behavior by creating a "firm within a firm." There are two broad streams of explanation for incumbent failure in these circumstances. One posits that incumbents fear cannibalization in the marketplace, and so under-invest in the new technology. The second suggests that incumbent firms develop organizational capabilities and cognitive frames that make them slow to "see" new opportunities and that make it difficult to respond effectively once the new opportunity is identified. In this paper we draw on two of the most important historical episodes in the history of the computing industry, the introduction of the PC and of the browser, to develop a third hypothesis. Both IBM and Microsoft, having been extremely successful in an old technology, came to have grave difficulties competing in the new, despite some dramatic early success. We suggest that these difficulties do not arise from cannibalization concerns or from inherited cognitive frames. Instead they reflect diseconomies of scope rooted in assets that are necessarily shared across both businesses. We show that both Microsoft and IBM were initially very successful in creating freestanding business units

    Paper Information

    • Full Working Paper Text
    • Working Paper Publication Date: January 2011
    • HBS Working Paper Number: 11-077
    • Faculty Unit(s): General Management; Strategy
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    Rebecca M. Henderson
    Rebecca M. Henderson
    John and Natty McArthur University Professor (Leave of Absence)
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