I think anyone so "banned" by the Deep State Social Media Crony Corporations has good grounds to sue.
Our Freedom of Speech is under a world wide web of attack.
While various authoritarian states make no effort to hide direct censorship of speech, the “advanced democracies” are more subtle. Germany, with no absolute constitutional protection for Free Speech, is contemplating empowering Internet Service Providers to refuse service to “hate groups.” At the same time the large international corporate controllers of the Internet, such as YouTube, Facebook and Google, are already escalating content controls to enforce “political correctness” – if you don’t follow the Party Line, you cannot be heard.
First they came for the Neo-Nazis and banned them from Facebook. No one protested. Then they came for Alex Jones and banned him from YouTube and Facebook. No one protested. Then they came for… You know the rest… they came for you and me, and no one was left to protest.
These supposed private Social Media Companies are actually exercising government authority. Just as much as if they had been the “private” Tax Farmers of Ancient Rome.
They are the privatized agents of Deep State control and censorship. They exercise this control on several levels. Each of these mega-corporations is, in fact and in law, “a creature of the state.” It is created by registration with government that gives it authorities (such as limited liability to third parties) which it could not exercise as a truly private association.
If the same Rule of Law that applies to truly private actors applied to government and its crony corporations, “content control” efforts would be understood to be exactly what they are: censorship. Real free market competition and technological progress would rapidly make the near-monopoly power of Google and Facebook irrelevant. If the same Rule of Law that ought to apply to Government Censorship – that there can be no such law – applied to the crony corporations, YouTube, Facebook etc. “private” censorship could not remain.
 Ibid. “In Packingham v. North Carolina (2017), the Supreme Court held that a North Carolina law prohibiting registered sex offenders from accessing various websites impermissibly restricted lawful speech in violation of the First Amendment. The Court held that ‘a fundamental principle of the First Amendment is that all persons have access to places where they can speak and listen, and then, after reflection, speak and listen once more.’”