Well, the original article was about growing inside a warehouse - hence no sun.
They could ofc use green houses. However, if you've ever seen a modern industrial green house after dark, you can see how they would be unlikely to get a permit for a large operation. The light pollution from these things can be seen lighting the sky above them from miles away, they are like miniature suns. Imagine having one outside your apartment :)
They could ofc use green houses. However, if you've ever seen a modern industrial green house after dark, you can see how they would be unlikely to get a permit for a large operation. The light pollution from these things can be seen lighting the sky above them from miles away, they are like miniature suns. Imagine having one outside your apartment :)