A nation state and a company are different in substance as well. I am sympathetic to the idea that companies (in America) can do more to curtail your freedoms. But, this is only true because of our system of government. In principle, a government can do much more than a company to curtail your freedoms. In practice, this is often less true. (although if you bump into eminent domain, or similar laws, then the government is much more threatening to you.)
We don't have to look far for this theoretical: the Chinese government rounds up people and puts them in camps, and disappears people for having the wrong opinions.