I've emailed corporations in the past with stupid questions like "Why the heck would you promote chromium in your beverage on the label"? The answers I received were not very satisfying.
I'm imagining in my head a wiki entry for "The Missouri Pacific Cider disaster" where in 1993, Martinelli's finally shipped its first experimental 2-gallon containers of sparkling cider. "While in the process of being shipped to stores across the US, a train with 23 boxcars of cider hit a bumpy set of tracks, shaking the cider to pressures beyond which the bottles could hold. The resulting explosion destroyed a large section of Argyle TX, just outside of the Dallas Ft Worth area. ..."
Yeah, sometimes my imagination runs wild.
An argument is two people sharing their ignorance.
A discussion is two people sharing their understanding, even when they disagree.
It's probably a marketing idea. If it's $2.50/700 mL bottle or thereabouts, then a 2 gallon container would cost close to 10 bucks or thereabouts and at that price, it wouldn't be very attractive to consumers.
If bees did go extinct, we could always hire people to dress up as bees and pollinate flowers with tiny feather dusters. Sure it'd be more expensive, but there are also millions of idle teens.