[khedoros1]

Shipping durability (plastic instead of a cardboard carton) and ease of machine handling ("sqround" instead of square). Both are covered in the blog.

[dvcc]

They never really talk about alternatives to the plastic bottle, just variations of it.

I would also think filling and distribution of a carton is a solved problem considering how much milk/juice gets moved in them without too much damage.

[khedoros1]

They talked about shipping durability, which was the point I was making. A cylindrical-ish plastic bottle would be less prone to crushing than a square cardboard carton.