You should have probably listened to the interview before jumping to conclusions about the subject matter. The crux of the matter is (according to Krugman and

You should have probably listened to the interview before jumping to conclusions about the subject matter. The crux of the matter is (according to Krugman and the book's author) is not so much the high incomes, but rather than inherited wealth which is now growing faster than the economy. The initial wave of oligarchy happened while the country was industrializing and hence was swallowed up by the greater growth of the overall economy, then staunched further by very progressive taxation during the New Deal and WWII. Today the economy is growing much more slowly and any talk of wealth redistribution is a dirty word.