Those are great feature-rich platforms, but their focus is on public distribution. Configuring them to be private isn't trivial and even then they're much more complex to operate. Haven focuses on privacy and I've tried to make it easier to use, sort of like how Trello got a lot of popularity by being a simpler, easier-to-use alternative to Jira.
From the features, it seems like the focus is on granting different access to different people on a per-post basis.
> There is no option to make your blog public to the world. You get to create an account for anyone you want to have access
...
> If you want a public blog to build a base of followers, or promote a product, or try to profit from your blog—this isn't the right service for you. I suggest you use Wordpress instead.
