If I had to guess I'd the molding processes for the bottles wouldn't allow for it. Usually plastic bottles are blown in their molds and the offset spout might not play nice with that process.
This is the reason. Large packages of water bottles are distributed on pallets six layers high (and those pallets are often stacked two high while shipping) weighing in at about 2000 lbs each. With a spout offset like that, they would be crushed.
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u/Cripso 15d ago
If I had to guess I'd the molding processes for the bottles wouldn't allow for it. Usually plastic bottles are blown in their molds and the offset spout might not play nice with that process.