You mean the country of the Zaibatsu? Where the economy is stagnant for the past several years? That has several global conglomerates like Sony and Toyota?
> Their business empire grew N-fold, they just didn't grow in Japan, but the rest of Asia.
I feel like that’s strengthening the point you’re arguing against. Consider the quotes sentence alongside the realities of American firms outsourcing their manufacturing. Yes the firms are still juiced by American investors, but there are additional concerns beyond the investment capital. It affects individuals jobs, industries, and economies here in America (or in Japan) for large components of the economy to happen elsewhere.
Their business empire grew N-fold, they just didn't grow in Japan, but the rest of Asia.
Find a name of any non-Chinese blue chip company from Asia, and there is good chance it has Japanese investors.