Maybe I should've emphasized per Piketty---if you're familiar with his premise, it's that the only thing that has disrupted the steady rise in wealth inequality

Maybe I should've emphasized per Piketty---if you're familiar with his premise, it's that the only thing that has disrupted the steady rise in wealth inequality is war. The extension of current trends made in the article is consistent with the historical analysis in Piketty's book. The only ways it will stop, in his view, are a) war, which we've tried (and which works, but with obvious drawbacks), and b) a global wealth tax, which we haven't tried.