This doesn't really factor a lot of things. It's a bit too simplified in my opinion. There's nothing here about costs involved, labor, and technological shift which frankly, isn't really possible for a lot of countries. A part of me doesn't really trust this post as there isn't really much it cites as its source. If I saw the graph he was showing at a glance I really wouldn't believe what he was saying unless he could back it up with the data, which he doesn't do.