You're reaching here with the Wordpress example (.org isn't even applicable to this discussion -- it's an open-source CMS). Wordpress.com is a hosting platform.

You're reaching here with the Wordpress example (.org isn't even applicable to this discussion -- it's an open-source CMS). Wordpress.com is a hosting platform. Just because as a subset of the options you can make a blog (vs. an ecommerce site, a portfolio, a landing page, etc.) doesn't make it Medium's competitor. Visit their homepage. Do you see a content aggregator or something closer to Squarespace?