In the case of Canada , Porter did not adequately consider the nature of multinational activities.In the case of New Zealand , the Porter model could not explain the success of export - dependent and resource - based industries .
In the case of Canada , Porter did not adequately consider the nature of multinational activities . 
 Business Quarterly , 55 ( 3 ) , 61 -- 64 , 1991 In the case of New Zealand , the Porter model could not explain the success of export - dependent and resource - based industries .