"Thus, the concept of “industry profitability” may have no meaning”

Há muitos anos que aqui no blogue escrevo sobre o "Lugar do Senhor dos Perdões". Senhor dos Perdões por causa de um dos postais onde abordei o tema sobre como a academia vê os sectores económicos, blocos homogéneos, quando a realidade que eu vejo é a de uma extrema variabilidade de desempenho e postura, traduzida na famosa frase "há mais variabilidade dentro de um sector económico do que entre sectores económicos".

Recordemos alguns postais sobre o tema:

• Shift happens! - Novembro de 2014
• O triunfo da heterogeneidade - Agosto de 2012
• Qual o retorno da atenção? - Julho de 2012
• A minha tese corroborada - Abril de 2011
• É perigoso pôr catequistas à frente de uma economia! (parte II) - Março de 2011

Mais um trecho retirado de "The Crux - How Leaders Become Strategists" de Richard P. Rumelt:

“Michael Porter’s “Five Forces” industry-analysis framework. This framework is based on the economic theory of “industrial organization,” or IO, which attempts to explain why some industries generate more profits than others.

Each of the five forces—the strength of competition, the ease of new entrants appearing, the bargaining power of suppliers, the bargaining power of customers, and the threat of substitute products—is a threat to an industry’s profitability.

When employing the framework, you look in fair detail at each of these forces. Just looking at these facts about an industry can often help insight. But remember that the underlying model is about industry performance, not individual company performance. If the profit rates of firms within an industry are spread out over a wide spectrum, with some high and others low, then the five-forces framework is inappropriate. It is not that the model is wrong. It is a model of an industry of roughly similar firms. If your company is in an industry where almost all competitors are similar and are struggling with low profits and, especially, price cutting, then the five-forces framework is the right tool of analysis.

One issue with the framework is that most real industries contain firms with markedly different profit rates. Thus, the concept of “industry profitability” may have no meaning.”

Agora, lembrem-se das "amélias" sempre a pedir orientação ao governo de turno para o seu sector.