Depends on how one interprets “freedom of the press”.
If the meaning of that language is the freedom to publish and disseminate information by anyone, then any individual or organization, regardless of how legally structured, may distribute books or movies or web pages without government restriction, subject only to the libel and copyright laws. (edit: or any laws covering the unauthorized distribution of classified defense or personal health and financial information)
If the meaning of the language is that particular organizations, specifically defined/designated as
"THE PRESS"
may do those things, while the rest of the USA, not defined as
"THE PRESS"
is subject to regulation and limitation, then Citizens United was improperly decided.