Corporate nationalism is a phrase that is used to convey various meanings:
"Corporate Nationalism" may be used to describe a political philosophy and economic theory whose adherents are corporatists and believe that the basic unit of the society, be it the family or other corporate groups, has the same interests as the nation. Some therefore believe that the state should deal primarily with "corporations", which may include companies, worker's cooperatives, unions and so on, and allow these units to organize themselves to serve their members as they feel fit.
Norway has a history of state campaigns to block foreign companies from taking over major Norwegian firms. In 2005, PepsiCo was rumored to be planning a bid to take over French food group Danone, arousing popular outcry. A former boss of Danone said. "Danone is like Chartres cathedral, and one does not buy the cathedral of Chartres."
The phrase may be used to describe national intervention in corporations, including outright nationalization where the state assumes ownership of the corporation. Some see recent US government interventions in the Financial industry, including the effective nationalization of Fannie Mae and Freddie Mac are seen as a form of corporate nationalism.
Some libertarians in the USA consider that the end of slavery coincided with the start of a regime "tainted" by aggressive corporate nationalism, or government intervention into the economy. In this view, the destruction of chattel slavery preserved and perpetuated "bourgeois" slavery.