In addition to Rosenzweig’s “halo effect” I found a very interesting article on cumulative advantage, a study conducted by Duncan J. Watts, the author of “Six Degrees: The Science of a Connected Age”:
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“Cumulative advantage, or the rich get richer effect means that if one object happens to be slightly more popular than another at just the right point, it will tend to become more popular still. As a result, even tiny, random fluctuations can blow up, generating potentially enormous long-run differences among even indistinguishable competitors. Social influence plays as large a role in determining the market share of successful products, like songs, as differences in quality.
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Network effect
Economists like Brian Arthur and Paul David have long argued that the attractiveness of a technology increases with the number of people using it. But even in markets that don’t exhibit obvious network effects (like markets for low-carb or organically produced food, fuel-efficient vehicles or alternative energy technologies), sudden shifts in consumer demand can still arise, persist and then shift again. These shifts often come as surprises but are soon explained away as mere reflections of changing public sentiments. Yet while in some sense these markets do reflect what people want, that is true only of what they want right now. If markets not only reveal our preferences but also modify them, then the relation between what we want now and what we wanted before — or what we will want in the future — becomes deeply ambiguous.
That doesn’t mean we should stop trying to anticipate the future, any more than we should stop trying to make sense of the past. But it does mean that we should treat both the predictions and the explanations we are served — whether about the next hit single, the next great company or even the next war — with the skepticism they deserve.”
