Biggest loser will be the domestic Japanese Camembert industry[1], as according to a Reddit poster[2] Japan only has 4 cheeses (Sandwich cheese, cheese that melts (とろけるチーズ), parmesan cheese (for pasta) and camembert).
But that could turn around as consumers discover new cheeses and then incorporate cheese into their diet more.
One thing I recall about Japan, specifically Tokyo, was how many French patisseries there were, so it would seem to me there's a huge untapped market for French Cheese and Wine to accompany.
[1] https://whatjapanthinks.com/2017/10/05/camembert-is-japans-f...
[2] https://www.reddit.com/r/japan/comments/1xwk51/is_it_true_th...