As I've said, that's a parity, not a domination. A dominant share of the market constitutes its majority, i.e. more than 50%, but most preferably a near-monopoly so that very few competitors have a chance of competing profitably in the same segment, with only limited expansion potential. Neither of this holds true for the Japanese presence; the US market is full of formidable competitors with various capabilities. Korea is undoubtedly one of them. Additionally, basic marketing would teach you that a product's dynamic competitiveness is more than just its present sales performance in the absolute terms; it's also as much about sales growth and sales decline. Current trends show that Korean presence is rapidly growing and is catching up to Japan in many sectors in the US, very quickly (at the same time, labor and manufacturing cost continues to increase in Korea by annual 4-5%, gradually dampening cost-competitiveness, but compensated by improving quality-competitiveness through increased innovation). 'Dominance' is not a word that most sensible market analysts would lightly use to describe Japan's competitiveness in the US anymore. It remains somewhat superior, yes. Up to a degree that other entrees can realistically catch up.