Porter's Diamond

Last Updated: March 10, 1997

© Copy right 1997 by Keith Head. Do not reuse without permission.


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In 1990, management strategy professor Michael Porter launched a second attack on Factor Proportion Theory.

Porter on "Factor-driven" competitive advantage:

Technological differences much more important than differences in factor abundance.

Abundance of factors may actually undermine competitive advantage.

Why?

1. Imitability/substitutability make it very difficult to obtain sustained advantage based on abudant general-use factors.

2. Abundance generates waste. Scarcity generates innovative mindset.

Example: BC Forest-based industries

Lumber has seen rising competition from Chile (trees grow twice as fast?) and the Southeastern United States.

Newsprint has seen rise of "Urban Forest"--recycled newspaper.

Nevertheless, forest-products are a huge export for BC, and give us a clear example of the benefits of factor abudance.

How do Companies achieve competitive advantage?

Returning to the Ricardo framework, Porter proposed that technological advantage (greater output per unit of input), not relative factor abundance, was the key to obtaining competitive advantage.

And how to obtain technological advantage? INNOVATION .

Porter: "Innovation is the result of unusual effort."

"Innovation usually requires pressure, necessity, and even adversity: the fear of loss often proves more powerful than the hope of gain."

Example of competitive advantage based on innovation: Fresh- cut flowers from Holland. ($1b in exports despite cold, grey climate.) Innovations in glass-house growing, energy conservation (took advantage of abundant natural gas)

Definition:

Selective Factor Disadvantage (SFD): Absence of a basic factor that would be advantageous to have in abundance if there were no dynamic effects.

Proposition:

An SFD can stimulate innovation which more than compensates for the original disadvantage.

SFDs are best when they send an accurate signal about circumstances that will ultimately prevail elsewhere.

Since resource depletion seems to be a general trend, it pays to be the first mover in figuring out how to generate more output with fewer resources.

Examples of SFDs


Porter's Main Points

Porter's Diamond (the diagram).


Implications for business:

trivially, "innovation is good" (actually we know that from the point of view of a specific industry's competitive advantage, innovations in unrelated industries are actually bad because they tend to drive up the prices of general use factors in your country. What matters for C.A. is a pace of innovation that is rapid relative to foreigners and other domestic industries)and "being lucky is good."

more important to pick the right location for headquarter functions (design, development, core manufacturing, marketing) than to find the lowest cost source of components, or the cheapest place to assemble the final product. possible that by dispersing a single line of business lose valuable intra-firm synergies. One tricky issue that porter skirts is how to know which are the related industries that really matter. if you don't know then its hard to decide if choosing separate "home bases" for different business segments is a good idea.


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