Earlier quoted context omitted.
> perpetually underperforming businesses Is this a bad or good thing for sustainability?
You're suggesting the answer by asking the question, but yes, companies that consistently deliver moderate performance (are less extractive and don't maximize gains) would generally be better for the world as a whole than highly optimized, fragile corporations that deliver maximal returns by chewing up everything in their path. They'd even, in the longer run, be better for their own shareholders and their descendants…
Japan’s bubble resulted in deflation because a bunch of zombie firms spent decades paying down balance sheet debts rather than resolving things quickly through bankruptcy. And the Japanese keiretsu structure mostly disadvantages businesses outside of the massive conglomerates, particularly small and medium enterprises.