I don't see how this would necessarily apply to every scenario. Transmission is expensive and storage is still not ideal. Briefly reading the article it seems

I don't see how this would necessarily apply to every scenario. Transmission is expensive and storage is still not ideal. Briefly reading the article it seems like the author is assuming there is like a 1:1 global marketplace where any energy produced in one area can replace energy demand in another. That's just not the case.