Strategy’s biggest blind spot: Erosion of competitive advantage

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Strategy’s biggest blind spot: Erosion of competitive advantage

By Andy West et al., | McKinsey & Company | February 18, 2026

3 key takeaways from the article

  1. Competitive advantage is the most critical yet misunderstood facet of strategy.  To identify shifts in competitive advantage, the authors looked for changes in market position using a metric they call the “shuffle rate”—an industry-level marker that measures the speed of change in the positions of market leaders and laggards. 
  2. The study found that the shuffle rate has accelerated for more than 60 percent of industries in the past decade. This pattern suggests that the defining elements of competitive advantage are in flux, the degree of differentiation between market players is narrowing (causing more frequent positional changes), or both.  The result is an increasing erosion of competitive advantage for some companies and a critical opportunity to capture greater market share for others.
  3. With competitive advantage under pressure, business leaders need to actively protect their edge over peers. They can do so by following five rules:  Develop a granular view of competitive advantage.   Tailor the advantage to each market.  Don’t overinvest in areas that won’t improve competitive position.  Boost the return on competitive advantage by embedding it into strategic decision-making.  And track metrics that can signal changes in the competitive landscape.

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Topics:  Strategy & Business Model, Competitive Advantage

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