They flat out bombed, but I think that shows that Yakuza isn't a game that can stand as a full retail title outside of japan, which is fine.
So bake in an english translation at development, don't spend the money for english voice work, put it on PSN, let the word of mouth take care of the marketing and see what it does. At the very least, you'll cover costs for the text localization and you'll still end up with more profit than you did before.
But Sega doesn't seem to think that's worth their time, which is crazy to me. That is (from what I'd assume from other industry jobs i've been associated with) a 10,000 dollar outsource job that can be completed in a few months for a game that has the budget of a couple million. Craft services costs more.
You don't need to pay Micheal Madson's salary to have this game be a success outside of japan.