Even the American notion of Free Speech spelled out in the First Amendment only restricts the government's power to censor speech. Private enterprise can censor

Even the American notion of Free Speech spelled out in the First Amendment only restricts the government's power to censor speech. Private enterprise can censor anything it wants on its platforms, unless it comes under the jurisdiction of some kind of regulator. This is why it's so dangerous to democracy that so much political speech these days relies on unregulated privately-owned platforms.