I think what happened with "social media" is a digital equivalent of land enclosures. In the past, there was Internet content, let's simplify it to blogs, which

I think what happened with "social media" is a digital equivalent of land enclosures. In the past, there was Internet content, let's simplify it to blogs, which was available publicly for anybody to see, and then there was content aggregators/filters (search engines, blog aggregators) which selected and curated the content. But anybody could come and do that. Social media effectively "privatized" the content, now you have the content within their walled garden, and only they have monopoly on content filtering and aggregation (within their realm). This allowed them to monetize the advertisements on this content. So I believe wanting "social media as common carriers" really means going back to the state before they existed, where anybody could host content and anybody could filter content. I don't think it will happen, because then the business model is dead, and the force of capitalism will not allow it (just like there is very little public land now).