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This summer, we published an analysis showing that the gap between large and small firms has grown over the past 15 years, with large companies becoming more likely to maintain their dominance and small ones less likely to become big and profitable. Several readers wrote to us asking about what’s happened to medium-sized firms — those not included in the top 30% or the bottom 30% of firms as measured by market value but those in the middle 40%.
Read the entire post on Harvard Business Review.