And... This is kinda the argument I had against no-region locking (despite everyone claiming that all arguments for region locking were stupid)...
If a game doesn't require localizing (such as games with language options, or more likely: games that don't need reading and comprehension (IE, fighting, racing, rhythm, shooters, etc etc) ) to enjoy the game... Then you just buy the version that comes out first, from the country that released it first.
And then... You don't double dip.
MOST consumers don't double dip. There's little to no reason to.
So then the game that hits the localized country gets a large chunk of sales never making an appearance.. then the publisher, and other publishers viewing these sales, conclude: THERE IS A VERY WEAK INTEREST FOR THIS GENRE IN THIS COUNTRY, SO WE'LL STOP TRYING TO SEND THEM HERE.
And then comes a game that NEEDS translation, but belongs to the genre... And then we don't friggin get it at all (except for those who can read Japanese).
THEN a large populace of gamers who WOULD HAVE grown an interest for that particular game and piqued the interest of game companies who would have been willing to sell into this country (if there's an audience, they'll bother to localize) -- never find out about this gem until 3-5 years after the fact... Because this large populace only looks at what's localized.
It's a domino effect. Usually starting from niche title to big title. And it does occur more often than you think.