the first general implication relates to our discussion about domestic rivalry. the fact that the industries that do not confirm the relevant hypotheses exhibit similarities amongst themselves as compared to ones that do, prompts the question as to whether or not some industries are better explained by the dimond. Specifically, it is interesting, which are competitive without having domestic rivals, economies of scale are of essential importance, and competition takes place on a global scale. the construction and leather clothes industries are closer to being perfectly competitive. this possibility of having some type of industries better explained by the dimond framework finds further support if we also consider that three of the four question marks the table 1, signalling the areas that cannot be explained within the framework, are observed in the flat steel industry. this industry can be characterised as a capital-intensive sector where competition take place on a global scale and goverment involement is high and more direct. in short, we need to investigate further in other countries if the dimond framework is more suitable for a certain range of industries, possibly those, which are closer to being perfectly competitive.