What remains is this [1] 1934 Comms. Act.
In the US it's the Wild West and basically money rules on this issue, like the vague laws about land holding and mineral rights on the frontier in the 20th century, power is winning, not so much civility.
I'm not sure that the EU has the right laws, but at least there are clearly measures enacted to protect individuals and to try to create some kind of more rational 'playing field' even at the risk over over regulation.
Maybe we are in an era where only a few things here and there are going to get banned, and we will arrive at a new 'consensus' without intervention, that Parler was taken down isn't the end of the world for free expression ... or it's possible things will only escalate, it's hard to say.
But it's worth considering if hosting platforms might better fall more under the notion of 'carrier' than they would 'internet service' i.e. Section 230.
[1] https://en.wikipedia.org/wiki/Communications_Act_of_1934