The other reason could be – cylindrical bottles create a lot of voids when being transported and because coke is under pressure it can’t go in square cartons. A lot of the cost of bottled / cartoned drinks is the transport rather than the contents. 10 litres of orange juice needs 1 litre diesel to get it from the farm to the supermarket and thats with no voids created by the packing. A narrower or shorter bottle might allow you to get more product and less air onto a truck
True, but the new bottle is curvier than the last, so unless they’re actualy going to squash them together it can’t be that.
I’m going with someone thinking of a tax on junk food applying to “portions” over 1000calories or somesuch. 200g bars of chocolate seem to have all but dissapered and been replaced by 120g bars as well.
That and marketing, there’s not much other than the bottle to make coke stand out from Pepsi, or generic cola, they’re all in the same bottles on the same shelf.