It is also possibl

It is also possible to construct an alternative Okishio-type model, in which the rising cost of land rents (or property rents) lowers the industrial rate of profit.^[30]

David Ricardo, interpreting Adam Smith's falling rate of profit theory to be that increased competition drives down the average rate of profit, argued that competition could only level out differences in profit rates on investments in production, but not lower the general profit rate (the grand-average profit rate) as a whole.^[31] Apart from a few exceptional cases, Ricardo claimed, the average rate of profit could only fall if wages rose.^[32]

In Capital, Karl Marx criticized Ricardo's idea. Marx argued that, instead, the tendency of the rate of profit to fall is "an expression peculiar to the

In Capital, Karl Marx criticized Ricardo's idea. Marx argued that, instead, the tendency of the rate of profit to fall is "an expression peculiar to the capitalist mode of production of the progressive development of the social productivity of labor".^[33] Marx never denied that profits could contingently fall for all kinds of reasons,^[33] but he thought there was also a structural reason for the TRPF, regardless of current market fluctuations.

By raising productivity, labor-saving technologies can increase the average industrial rate of profit rather than lowering it, insofar as fewer workers can produce vastly more output at a lower cost, enabling more sales in less time.^[34] Ladislaus von Bortkiewicz stated: "Marx’s own proof of his law of the falling rate of profit errs principally in disregarding the mathematical relationship between the productivity of labour and the rate of surplus value."^[35] Jürgen Habermas argued in 1973–74 that the TRPF might have existed in 19th century liberal capitalism, but no longer existed in late capitalism, because of the expansion of "reflexive labor" ("labor applied to itself with the aim of increasing the productivity of labor").^[36] Michael Heinrich has also argued that Marx did not adequately demonstrate that the rate of profit would fall when increases in productivity are taken into account.^[37]

Contingency

How exactly the average industrial rate of profit will evolve, is either uncertain and unpredictable, or it is historically contingent; it all depends on the specific configuration of costs, sales and profit margins obtainable in fluctuating markets with given technologies.^[38] This "indeterminacy" criticism revolves around the idea that technological change could have many different and contradictory effects. It could reduce costs, or it could increase unemployment; it could be labor saving, or it could be capital saving. Therefore, so the argument goes, it is impossible to infer definitely a theoretical principle that a falling rate of profit must always and inevitably result from an increase in productivity.

Perhaps the law of the tendency of the rate of profit to fall might be true in an abstract model, based on certain assumptions, but in reality no substantive, long-run empirical predictions can be made[?]. In addition, profitability itself can be influenced by an enormous array of different factors, going far beyond those which Marx s

Perhaps the law of the tendency of the rate of profit to fall might be true in an abstract model, based on certain assumptions, but in reality no substantive, long-run empirical predictions can be made[?]. In addition, profitability itself can be influenced by an enormous array of different factors, going far beyond those which Marx specified[?]. So there are tendencies and counter-tendencies operating simultaneously, and no particular empirical result necessarily and always follows from them[?].

Steve Keen argues that if you assume the labor theory of value is wrong, then this obviates the bulk of the critique. Keen suggests that the TRPF was based on the idea that only labor can create new value (following the labor theory of value), and that there was a tendency over time for ratio of capital to labor (in value terms) to rise. However, if surplus can be produced by all production inputs, then he believes there is no reason why an increase in the ratio of capital to labor inputs should cause the overall rate of surplus to decline.^[39]

Eugen Böhm von Bawerk^[40] and his critic Ladislaus Bortkiewicz^{Eugen Böhm von Bawerk[40] and his critic Ladislaus Bortkiewicz[41] (himself influenced by Vladimir Karpovich Dmitriev[42]) claimed that Marx's argument about the distribution of profits from newly produced surplus value is mathematically faulty.[43] This gave rise to a lengthy academic controversy.[44][45][46][47][48][49] Critics claimed that Marx failed to reconcile the law of value with the reality of the distribution of capital and profits, a problem that had already preoccupied David Ricardo – who himself inherited the problem from Adam Smith, yet failed to solve it.[50]}

Marx was already aware of this theoretical problem when he wrote The Poverty of Philosophy (1847).^[51] It gets a mention again in the Grundrisse (1858).^[52] At the end of chapter 1 of his A Contribution to the Critique of Political Economy (1859), he referred to it, and announced his intention to solve it.^[53] In Theories of Surplus Value (1862–1863), he discusses the problem very clearly.^[54] His first attempt at a solution occurs in a letter to Engels, dated 2 August 1862.^[55] In Capital, Volume I (1867)^[56] he noted that "many intermediate terms" were still needed in his progressing narrative, to arrive at the answer. Engels suggested, that Marx had indeed solved the problem in the posthumously published Capital, Volume III, but critics alleged Marx never delivered a credible or definitive solution.

Specifically, critics claimed that Marx failed to prove that average labour requirements are the real regulator of product-prices within capitalist production, since Marx failed to demonstrate what exactly the causal or quantitative connection was between the two. As a corollary, Marx's theory of the TRPF was undermined as well, since it was based on a necessary long-term evolution of value-proportions between the composition of production capital and the yield of production capital.

Marx regarded the TRPF as a general tendency in the development of the capitalist mode of production. Marx conceded, however, that it was only a tendency, and that there are also "counteracting factors" operating which had to be studied as well. The counteracting factors were factors that would normally raise the rate of profit. In his draft manuscript edited by Friedrich Engels, Marx cited six of them:^[57]

• More intense exploitation of labor (raising the rate of exploitation of workers).
• Reduction of wages below the value of labor power (the [59] In the end, none of the conceivable counteracting factors could stem the tendency toward falling profits from production.

  Empirical research

  First empirical tests

  In the 1870s, Marx certainly wanted to test his theory of economic crises and profit-making econometrically,^[60] but adequate macroeconomic statistical data and mathematical tools did not exist to do so.^[60] but adequate macroeconomic statistical data and mathematical tools did not exist to do so.^[61] Such scientific resources began to exist only half a century later.^[62]

  In 1894, Friedrich Engels did mention the research of the émigré socialist Georg Christian Stiebeling, who compared profit, income, capital and output data in the U.S. census reports of 1870 and 1880, but Engels claimed that Stiebeling explained the results "in a completely false way" (Stiebeling's defence against Engels's criticism included two open letters submitted to the New Yorker Volkszeitung and Die Neue Zeit).^[63] Stiebel

  In 1894, Friedrich Engels did mention the research of the émigré socialist Georg Christian Stiebeling, who compared profit, income, capital and output data in the U.S. census reports of 1870 and 1880, but Engels claimed that Stiebeling explained the results "in a completely false way" (Stiebeling's defence against Engels's criticism included two open letters submitted to the New Yorker Volkszeitung and Die Neue Zeit).^[63] Stiebeling's analysis represented "almost certainly the first systematic use of statistical sources in Marxian value theory."^[64]

  Although Eugen Varga^[65][66] and the young Charles Bettelheim;^[67][68] already studied the topic, and Josef Steindl began to tackle the problem in his 1952 book,^[69] the first major empirical analysis of long-term trends in profitability inspired by Marx was a 1957 study by Joseph Gillman.^[70] This study, reviewed by Ronald L. Meek and H. D. Dickinson,^[71] was extensively criticized by Shane Mage in 1963.^[72] Mage's work provided the first sophisticated disaggregate analysis of official national accounts data performed by a Marxist scholar.

  There have been a number of non-Marxist empirical studies of the long-term trends in business profitability.^[73]

  Particularly in the late 1970s and early 1980s, there were concerns among non-Marxist economists that the profit rate could be really falling.^[74]

  Various efforts have been conducted since the 1970s to empirically examine the TRPF. Studies supporting or arguing in favour of it include those by Michael Roberts,^{Particularly in the late 1970s and early 1980s, there were concerns among non-Marxist economists that the profit rate could be really falling.[74]}

  Various efforts have been conducted since the 1970s to empirically examine the TRPF. Studies supporting or arguing in favour of it include those by Michael Roberts,^[75][76] Minqi Li,^[77] John Bradford,^[78] and Deenpankar Basu (2012).^[79] Studies critical or contradicting the TRPF include those by Themistoklis Kalogerakos,^[80] Marcelo Resende,^[81] Òscar Jordà^[82] and Simcha Barkai.^[83] Other studies, such as those by Basu (2013),^[84] Elveren^[85] Thomas Weiß^[86] and Ivan Trofimov,^[87] report mixed results or argue that the answer is not yet certain due to conflicting findings and issues with appropriately measuring the TRPF.

  From time to time, the research units of banks and government departments produce studies of profitability in various sectors of industry.^[88] The National Statistics Office of Britain now releases company profitability statistics every quarter, showing increasing profits.^[89] In the UK, Ernst & Young (EY) nowadays provide a Profit Warning Stress Index for quoted companies.^[90] The Share Centre publishes the Profit Watch UK Report.^[91] In the US, Yardeni Research provides a briefing on S&P 500 profit margin trends, including comparisons with NIPA data.^[92]

  The American-Jewish magazine Tablet claims that :[Marx’s] essential idea, influenced by Ricardo, was that capitalism would become less and less profitable and that its downward spiral toward the abyss of deflation—lower prices, lower profits—would be followed by worldwide revolution. Instead, capitalism has become vastly more profitable".^[93]

  The McKinsey Global Institute claimed in 2016 that the three decades from 1985 to 2014 were the golden years for profits from stocks and bonds, but forecasts that average profitability will be lower in the future.^[94]

  In May 2018, a WSJ analyst concluded that if taxcut effects are removed from the figures, real US corporate profits were not growing anymore, notwithstanding a surge in profits on S&P listed shares. Another WSJ analyst commented, at the same date, that "With the profits data, it could take several quarters for clear trends to emerge from the tax-associated noise."^[95] From September 2018 onward, as the economic and political news worsened, the bloated US stockmarkets began to deflate, while the VIX index trebled.^[96] In November 2018, Michael Wursthorn reported that "The postcrisis boom in U.S. corporate profits may be near its peak."^[97] CNBC reported a similar story.^[98] At the end of 2018, the record gains for the year by the 500 richest people listed on the daily Bloomberg Billionaires Index had been wiped out – together, they had lost more than half a trillion dollars of net wealth.^[99]