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 日本マーケティング学会 ワーキングペーパーVol.8 No.4 
A Simple Mathematical Model of the Innovator’s Dilemma
Yoshihiro Ito
Professor, Nagaoka University of Technology
Hideo Noda
Professor, Tokyo University of Science
発行:2021年11月01日
更新:2021年11月01日
分類 : 論文
要約 :
According to the innovator's dilemma set forth by Christensen (1997), incumbent companies lag behind new entrants in entering the product markets of disruptive technologies. This study presents a simple mathematical model of the innovator ’s dilemma (what Christensen calls the \failure framework"), incorporating factors that determine the length of the market entry time lag. The model is based on a two-firm game involving an incumbent company and a new entrant in which cannibalization within the incumbent between its conventional technology-based business and a new disruptive technology-based business influence the incumbent ’s decision of whether and when to enter the disruptive technology product market. The originality of the model lies in the simple formulation of temporal changes in the demand for conventional technology products and disruptive technology products through the use of a line market with vertical line at a certain time based on the diagram presented by Christensen. The model shows that a new entrant enters the market for a disruptive technology product when its initial cost of investing in the business is below a certain level; in this case the incumbent also enters the market, but lags behind the new entrant. This study also identifies economic factors that affect the range of the time lag, something that Christensen (1997) did not do. The study makes a significant contribution to research on competition in innovation and is useful for strategic decision-making by managers of both incumbents and new entrants.
キーワード : Business strategy Christensen Disruptive technology Innovation Innovator's dilemma
ページ数 : 表紙1 + 本文16
ファイルサイズ : 114KB


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