When I used to work in a supermarket, I hated the stupid customers. This is a classic example. One of the soft drink companies fairly regularly gave away 50% free.
Therefore, for the same price, the bottle would be 3 litres in size rather than 2.
The amount of people who didn't like that.
"Excuse me, where's the 2 litre bottle?"
"Oh, it's the same price miss, you get an extra litre for free."
"But I don't want 3 litres, I only want two!"
Sigh!
I'm with the customer on this one. Soft drinks only stay good so long so having them in a larger container works against you. Also, having a larger container means needing more space to store it, and it is heavier and more unwieldy to carry. For some that extra litre of cola might be more like a white elephant than a boon.
Yeah, when I hauled my groceries by bicycle, I wouldn't want the larger sizes... But I also wouldn't be bitching out the person who isn't involved in the decision process...