Investors often gravitate toward high-quality companies — those with strong margins, durable competitive advantages and consistent growth. Yet the relationship between quality and returns is not linear. Paying too high a price can undermine even the best businesses.
Academic evidence supports this tension. A widely cited paper by Eugene Fama and Kenneth French shows that valuation multiples play a critical role in determining long-term returns, regardless of business quality.
As companies grow larger, their ability to sustain high growth rates diminishes. This is a mathematical constraint rather than a managerial failure. Research from McKinsey & Company notes that very few large firms sustain high growth over long periods, as competitive pressures and market saturation take hold.
When growth slows, valuation multiples often compress. This creates a scenario where a company can perform well operationally yet deliver poor shareholder returns. Historical examples, from technology leaders in the early 2000s to consumer brands in earlier decades, demonstrate this pattern.
The core mistake lies in conflating business excellence with investment attractiveness. A great company is not necessarily a great investment if expectations embedded in its price are too optimistic. Investors tend to underestimate how much future success is already priced in during periods of enthusiasm.
The discipline required is straightforward but difficult: separate the assessment of a company’s quality from the assessment of its valuation. Only when both align does the probability of satisfactory returns improve.
Source: Fama-French data library; McKinsey & Company
https://mba.tuck.dartmouth.edu/pages/faculty/ken.french/data_library.html
https://www.mckinsey.com/capabilities/strategy-and-corporate-finance/our-insights