Returns to scale always lead to economies of scale
Economic and organizational research demonstrates that returns to scale do not invariably lead to economies of scale, as operations frequently encounter saturation, diminishing marginal benefits, or inefficiencies.
The claim states that returns to scale ALWAYS lead to economies of scale. Microeconomic theory and empirical organizational studies (such as those examining healthcare practices and urban systems) show that scale increases can lead to constant or decreasing returns due to inefficiencies, saturation, and structural constraints. Therefore, the universal claim is refuted.
Zhao T, Meacock R, Sutton M. Scale, Skill-Mix, and Access Implications of the Production of Appointments by Primary Care Practices in England.. 2026. https://doi.org/10.1002/hec.70064
Paper 0 finds that while larger practices benefit more from certain staffing roles, there is generally little research evidence to universally support the assumption of increasing returns to scale.
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Vrabková I, Bauer D. Measuring Cost-Revenue Technical Efficiency in Fragmented Outpatient Care: A Comparative DEA and SFA Analysis.. 2026. https://doi.org/10.1177/00469580261437001
Paper 8 evaluates outpatient care using variable returns to scale and highlights significant inefficiencies and operational variations across providers rather than guaranteed scale economies.
Lyu S, Yan F. The nonlinear relationship between urban design form and energy efficiency.. 2026. https://doi.org/10.1038/s41598-026-41779-7
Paper 10 demonstrates a complex S-shaped trajectory with saturation stages and diminishing benefits rather than perpetual economies of scale.
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