They would be silly to ignore the international market though. BBTS, TFSource, Chimungmung, RK to name but a few all sell Takara Products and are all located outside Japan. The numbers that they sell are not insignificant so I'm sure Takara would consider it when they want to maximize sales.
I agree that their primary market is Japan, but if the percentage of international sales is 50% or even only 30%, it's still a big enough number to influence decisions.