IMO content and automation never belong in the same sentence together, unless your only goal is to fill in SEO content of which you aren't particularly concerned about the quality. If you're a startup concerned with your image, I don't think you want to be in that game.
You can't automate quality. It's impossible develop high-quality media without constant, transparent communication and editorial oversight. Especially if you're trying to do it cheaply.
If you're a big-budget brand with that wants to trade out banner ads for thoughtful content marketing, hire an editor with real journalism experience, then hire (or contract) the best journalists you can afford, with the biggest social media followings. This is why Red Bull, American Express, and Gilt Groupe kill it with content marketing, meanwhile you and I have never clicked "Like" on an auto-generated blog post from a random startup. The only way you'll compete with media companies for content-share is by beating them at their game.
That can't happen "automatically."