Japanese businesses are excellent
The Zaibatsu model has different incentives, particularly when they're jockeying for position with American internationals on their own turf.
They're very good at undercutting American industry. But I'd consider the Japanese cartel model flawed in other ways - miserable places to actually work for, agonizingly patriarchal, debilitating drinking/drug culture, zero work life balance, and the pay is shit.