But it's still not practicable. Your argument falls apart just looking at the oligopolies that have developed in other industries like oil, pharmaceuticals, or television media. Power consolidates without proper regulation, and will not redistribute itself without a massively consequential event to cause it. Also, some communities shouldn't have a safe place to develop their ideologies. You said yourself that you're okay censoring things like Anti-Vaxx arguments and Hocaust Denial, but sites like Parler provide a safe space for things just like that, while excluding many people who don't practice belief in harmful conspiracy theories.

Maybe it's a stretch, but your point boils down to the same logic as herd immunity toward COVID, that things just have a way of naturally sorting themselves out. What you aren't acknowledging is the consequences that come with something like that. Sometimes, government interference is required to fix the situation.