> Existing studies that show an increase in capital’s share of income miss the growing role of depreciation in short-lived capital, in items such as software, says MIT’s Matthew Rognlie in “Deciphering the Fall and Rise in the Net Capital Share.”
Subtracting depreciation isn't a fair comparison. The example uses software as a short-lived asset. Has the monetary value of Google's search algorithms depreciated? They've been upgraded with routine investment, but the scale of the returns on their upkeep vastly outweighs the capital investment, otherwise Google wouldn't be so profitable.
Software of the internally-developed sort isn't even depreciable [1], so it's not clear how its value for these purposes would be determined (short of assuming it represents a percentage of the business's value).
Also, from the paper linked in your article:
> Once all compensation of employees at the sawmill is
subtracted, the remainder is its gross capital income. Some of this capital
income will be paid to lenders in the form of interest, some will be paid
to the government in taxes on profits, and the rest may be retained on the
balance sheet of the sawmill or distributed as dividends to shareholders.
Gross capital income is thus a very broad concept, encompassing funds that
are ultimately paid out to many different recipients—it is unaffected, for
instance, by the split in financing between debt and equity.3
GROSS VERSUS NET: CONCEPTS An alternative to gross value-added is net
value-added, which subtracts depreciation. This can be divided into labor
and net capital income, the latter being gross capital income minus depreciation.
Everything which I have emphasized above are examples of returns to capital. Excluding them from consideration in this presentation is ignoring how a large amount of returns are channeled to owners of capital.
Debt-holders gain from interest and shareholders are enriched via dividends and share buybacks that never appear on the article's net income derived graph.
Of course, when you willfully ignore those huge tranches of returns, then housing looks like a major factor, because it is the common asset class that has been on a largely unchecked inflationary track.
Finally, your article from 2015 argues that the overall trend will reverse and labor's share of GDP will start increasing. Here's what has actually happened since then:
https://fred.stlouisfed.org/series/PRS85006173
The brief spike in 2020 was due to pandemic era redistribution policies like the child tax credit, among others. Since those have been repealed, labor's share has continued its prior trend downwards.
1. https://www.irs.gov/publications/p946#en_US_2023_publink1000...