Just want to point out two things: 1) Rognlie[1] pointed out that Piketty's central premise -- that the returns to capital are growing faster than the overall growth rate of the economy -- falls apart when you properly account for asset class and depreciation. The accelerating returns are specifically to real estate , while the returns to capital (excluding real estate) are flat. 2) Tyler Cowen pointed this out on hi…
Actually, Piketty doesn't concede this point and makes the extremely important distinction between aggregate wealth and wealth distribution . What Rognlie does point out is the incredible importance of real estate in the growth of capital income - far more than Piketty originally credited it with in Capital in the Twenty-First Century . As Piketty points out in the interview, an explanation based around real estate l…
"PIKETTY: If you look at the top of the wealth distribution, I don’t see a lot of real estate. I don’t think Matt Rognlie or anyone is saying that the huge rise in billionaire wealth in the US has anything to do with real estate. As far as I know, nobody has ever tried to put this theory on the table.
"I’m not saying real estate is not important. I think for middle-class assets and lower-middle-class and upper-middle-class assets — for the middle of the distribution — real estate is, of course, very important. The movement in real estate prices explains a lot of what’s going on, both in terms of aggregate value and distribution. I’m not saying it’s not important. It is very important.
"If you go back to our paper with Gabriel Zucman, which was published, now, almost 10 years ago in the Quarterly Journal of Economics in 2014, called “Capital is Back: Wealth-Income Ratios in Rich Countries, 1700–2010,” you will see, we have complete decomposition about the role of real estate in aggregate wealth accumulation, and it’s absolutely central for many countries over many periods of time."