Someone probably thinking that "bigger is always better" would be my guess. Five years ago that would probably have been true, but now with a much larger number of competing high-capacity diapers on the market, that niche is about full. There's nobody selling a high quality thin or medium diaper right now, they need to recognize that. I have some overnights and tighty-whities onhand still but they're pretty low on my perference list. Their smaller size and slower wicking makes them an inferior product for me for overnight, and they sweat too much during the day. *shrug* Hard to say for certain, only they can really look at the numbers and know what's the more profitable approach. I have to assume someone there has done the math and decided this is a good idea. (or they're fools, you don't make a market decision like this without doing the research in advance)