And the unmoderated spaced of before don't exist any more (Usenet), because companies didn't make money on it. Or worse, because it violated some company's "right".

Now, in order to speak, you nearly have to go through one of Their gateways. If you piss off FAMGA (Facebook, Apple, Microsoft, Google, Amazon), you're gone off the net. Some of those gatekeepers are big scripts with no human intervention for your level. If you fall between the cracks, then you have no recourse, other than find a place like HN and beg publicly - lest you get shitcanned by the HN gatekeepers.