But a country needs material resources to exist, right? Some of these are food, shelter, energy, health, entertainment and security.
These are all private enterprises in a capitalist state. For example, the energy sector is a group of capitalist enterprises. The energy sector is also at the same time something the population needs.
Therefore it is also crucial to the nation, its a national security.
They country would go to war in order to secure resources for the energy industry because it is a part of national security.
Another: walmart is americas veins and its a group of peoples property. Walmart is national security.
The fact that some of these are publicly traded does not change their relationship to ownership.