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.
I’ve always wanted to contribute to an open source project but by the time I get done with the grind of the work day I don’t have the mental energy to effectively work a second job competently.