Squarespace comes close, you basically have to pick a theme and start typing, but it also doesn't offer a free version. I think no one is in this space because

Squarespace comes close, you basically have to pick a theme and start typing, but it also doesn't offer a free version. I think no one is in this space because there's no legitimate way to make it happen profitably that users or readers will accept. A domain name is not free so that's already a non-starter for many. If Facebook or Twitter cost $10 a year, they might have 2% of their current user base.