the government exerts strong directive influence over investment, as opposed to having a merely regulatory role.
The keyword here is "strong directive influence". The United States does not have a strong federal government that intervenes in the economy despite what many libertarians and constitutionalists might say.
apart from the nationalization of some industries, the economy is based on private individuals being allowed property and private initiative, with this contingent upon service to the state.
our economic structure encourages the pursuit of private profit and offers many benefits to large businesses, but demands in return that economic activity should serve the national interest.
These two are kind of iffy. The majority of industries in the US do as they please without serving the national interest.
there is a societal belief that prosperity will naturally follow for the economy once the nation has achieved a cultural re-awakening.
Completely no. The Unites States does not have a palingenetic form of nationalism, in fact it's quite the opposite. The Patriotism and Nationalism espoused by many Americans is not revolutionary in nature like that espoused by Fascist ideology, but is characterized by a romantic view of the past, and is mostly civic in nature. There is no cultural re-awakening, no "new man" that needs to be created.
while our economy defends the principle of private property, which is held as inherent to the freedom and spontaneity of the individual personality, an aim is the elimination of economic autonomy of individuals from the state.
The key here is again the State. You could argue for the elimination of economic autonomy, but it would be by the industries themselves, not the State. Historically the United States government has opposed itself to economic centralization by breaking up monopolies and preventing mergers, something that a Fascist State would probably not do.
the state discourages too much of the wrong sort of international trade, believing that this may make our economy dependent on international capital and therefore vulnerable to economic warfare.
The United States has done the opposite since the transition from the American Economic School in the 70's and 80's. Deregulation and free trade has been the name of the game since then.
This leaves us with a few points which do not characterize the third position, and in fact describe most mixed economies, or describe a wide variety of different systems which are not Fascist in nature.
These points are:
the state's economy policies aim to promote superior individuals by promoting the interests of successful businessmen while destroying trade unions and other organizations of the working class.
taxpayers are responsible to private enterprise because the State pays for the blunders of private enterprise; profit is private and individual but loss is public and social.
different politicians will make completely opposite statements about the economic policies they support, but once in power politicians usually adopt whatever economic program they believe to be most suitable for their political goals.
our economy neither fully embraces liberal capitalism nor international socialism.
our state encourages class collaboration and our nation's economic principles believe that the existence of inequality and separate social classes is beneficial.
our state has a role in mediating relations between capital-holding and working classes.
our national economy is highly militaristic, and as such often increases military spending. One of the the most essential characteristics of our economy is its extremely high degree of militarization, with a large share of military items in the national budget and product going to the military.
our national economy emphasizes privitization.
That is not nearly enough to describe the economy under a Fascist State. Finally, I would also like to note that the most important part of Fascist ideology is the social and cultural revolution. Without it, it's simply Corporatism.