Historically speaking, in my opinion, in the 20th century authoritarianism was split between fascism (on the far right) and communism (on the far left), but in the modern world, communism is dead leaving only the authoritarianism of corporatism in both the vestiges of the USSR and China. Also, I note that it was actually Italian philosopher Giovanni Gentile who wrote the entry in the Encyclopedia Italiana that said: “Fascism should more appropriately be called corporatism because it is a merger of state and corporate power.” Mussolini, however, affixed his name to the entry, and claimed credit for it. In 1938, Mussolini dissolved Parliament and replaced it with the Camera dei Fasci e delle Corporazioni—the Chamber of the Fascist Corporations.
The following extract from the Wikipedia article discusses different types of 'corporatism' (with coordinated interactions between government labor and business) including fascist corporatism (with coerced coordination) and neocorporatism (with voluntary/nudged coordination. Furthermore, historically the world order can be divided geopolitically into the right and left with the far right being: fascism/corporatism, the moderate right being neoliberalism/neocorporatism, the moderate left being social democracy/socialism, and the far left being (dead) communism. Thus since the dead of communism (in the early 1990's) has shifted this balance so that the far right is now corporatism, the moderate right is now neoliberalism, the moderate left is neocorporatism (corporate democrats), and the far left is now social democracy/socialism.
This means that the various interpretations of the term 'Deep State" has slowly changed since the 1990's so that now Trump has claimed the mantle of corporatism and accuses the neocorporatists (like Robert Reich) as representatives of the 'Deep State" while in reality the American oligarchy of Trump's corporatism represents a form of 'Deep State' 'American Fascism' that I will touch upon in my next post:
Title: "Corporatism"
https://en.wikipedia.org/wiki/CorporatismCorporatism is the organization of a society by corporate groups and agricultural, labour, military or scientific syndicates and guilds on the basis of their common interests.
Fascist corporatismFascism's theory of economic corporatism involved management of sectors of the economy by government or privately-controlled organizations (corporations). Each trade union or employer corporation would theoretically represent its professional concerns, especially by negotiation of labour contracts and the like. It was theorized that this method could result in harmony amongst social classes.
…
This non-elected form of state officializing of every interest into the state was professed to reduce the marginalization of singular interests (as would allegedly happen by the unilateral end condition inherent in the democratic voting process). Corporatism would instead better recognize or "incorporate" every divergent interest into the state organically, according to its supporters, thus being the inspiration for their use of the term "totalitarian", perceivable to them as not meaning a coercive system but described distinctly as without coercion in the 1932 Doctrine of Fascism as thus:
When brought within the orbit of the State, Fascism recognizes the real needs which gave rise to socialism and trade unionism, giving them due weight in the guild or corporative system in which divergent interests are coordinated and harmonized in the unity of the State.[35]
[The state] is not simply a mechanism which limits the sphere of the supposed liberties of the individual... Neither has the Fascist conception of authority anything in common with that of a police ridden State... Far from crushing the individual, the Fascist State multiplies his energies, just as in a regiment a soldier is not diminished but multiplied by the number of his fellow soldiers.A popular slogan of the Italian Fascists under Mussolini was "Tutto nello Stato, niente al di fuori dello Stato, nulla contro lo Stato" ("everything for the state, nothing outside the state, nothing against the state").
…
Fascists in non-Catholic countries also supported Italian Fascist corporatism, including Oswald Mosley of the British Union of Fascists, who commended corporatism and said that "it means a nation organized as the human body, with each organ performing its individual function but working in harmony with the whole". Mosley also considered corporatism as an attack on laissez-faire economics and "international finance".
Neo-corporatismDuring the post-World War II reconstruction period in Europe, corporatism was favoured by Christian democrats (often under the influence of Catholic social teaching), national conservatives and social democrats in opposition to liberal capitalism. This type of corporatism became unfashionable but revived again in the 1960s and 1970s as "neo-corporatism" in response to the new economic threat of recession-inflation.
Neo-corporatism favoured economic tripartism which involved strong labour unions, employers' unions and governments that cooperated as "social partners" to negotiate and manage a national economy. Social corporatist systems instituted in Europe after World War II include the ordoliberal system of the social market economy in Germany, the social partnership in Ireland, the polder model in the Netherlands (although arguably the polder model already was present at the end of World War I, it was not until after World War II that a social service system gained foothold there), the concertation system in Italy, the Rhine model in Switzerland and the Benelux countries and the Nordic model in Scandinavia.
Attempts in the United States to create neo-corporatist capital-labor arrangements were unsuccessfully advocated by Gary Hart and Michael Dukakis in the 1980s. As Secretary of Labor during the Clinton administration, Robert Reich promoted neo-corporatist reforms.
Chinese corporatismChinese corporatism, as described by Jonathan Unger and Anita Chan in their essay China, Corporatism, and the East Asian Model, is the following:
[A]t the national level the state recognizes one and only one organization (say, a national labour union, a business association, a farmers' association) as the sole representative of the sectoral interests of the individuals, enterprises or institutions that comprise that organization's assigned constituency. The state determines which organizations will be recognized as legitimate and forms an unequal partnership of sorts with such organizations. The associations sometimes even get channelled into the policy-making processes and often help implement state policy on the government's behalf.
Russian corporatismOn October 9, 2007, an article signed by Viktor Cherkesov, head of the Russian Drug Enforcement Administration, was published in Kommersant, where he used the term "corporativist state" in a positive way to describe the evolution of Russia. He claimed that the administration officials detained on criminal charges earlier that month are the exception rather than the rule and that the only development scenario for Russia that is both realistic enough and relatively favorable is to continue evolution into a corporativist state ruled by security service officials.[
…
According to some researchers, all political powers and most important economic assets in the country are controlled by former state security officials ("siloviks"). The takeover of Russian state and economic assets has been allegedly accomplished by a clique of Putin's close associates and friends] who gradually became a leading group of Russian oligarchs and who "seized control over the financial, media and administrative resources of the Russian state" and restricted democratic freedoms and human rights.
…
Analyst Andrei Piontkovsky also considers the present situation as "the highest and culminating stage of bandit capitalism in Russia". He believes that "Russia is not corrupt. Corruption is what happens in all countries when businessmen offer officials large bribes for favors. Today’s Russia is unique. The businessmen, the politicians, and the bureaucrats are the same people".
Edit: I note that both corporatism and neocorpatism support private property and competitive markets, but have different ideologies regarding coercion and voluntary coordination/cooperation.