True but to apply 1A it had to be determined that the constitutional protections were applicable at all which hinged on the level the area had been "dedicated/o

True but to apply 1A it had to be determined that the constitutional protections were applicable at all which hinged on the level the area had been "dedicated/opened to public use" more recently other qualifiers have been added such that a company needs to exercise "powers traditionally exclusive to the state" to be held to constitutional standards. There were cases back years ago like Cyber Promotions v. America Online that allowed companies to limit speech on their platforms that would already cover cases like this too.