The real question is, if DMM is afraid of uniques in our version stealing their playerbase, why did they agree to potentially make new brides in the first place? They didn't think about that? Well, tough luck. It's not kindergarten, you can't just say "Ah, screw it.", take everything back and it's as if nothing happened. (Oh, wait... It seems you can.)
Or Nutaku just didn't bother to ask them?