Why Didn't Nixon Think of This Argument During the Pentagon Papers Case?

An intriguing statement in today's New York Times:

The majority [in Citizens United v. FEC] is deeply wrong on the law. Most wrongheaded of all is its insistence that corporations are just like people and entitled to the same First Amendment rights. It is an odd claim since companies are creations of the state that exist to make money.

The article's unsigned, so I guess we can take that as the official opinion of The New York Times Co.