You are not entitled to an audience. A monopoly requires an actual barrier, not a social one: i.e. physically limited space in telecommunication conduits in cities, for example.
And I think you've put your finger on it. A lot of people confuse a right to free speech with a right to be heard. They are BIG MAD that they don't have a god-given right to a large platform. Not that they built the platform and not that they contribute to its upkeep. But they still have strong feelings of entitlement.
