Marketing can be boring until it begins bring light to such a question. If you consider the number of plus size baby /youth diapers sold at the vast number of stores, internet sites, etc. Add to that the number of manufacturers that product drug store (inexpensive adult diapers) and their store and internet sales, now add the number of manufacturers that are making Medical grade, plus High-end, High-volume, quality diapers and just to round out the list, add those speciality adult AB/DL cutie diapers. Understand that they are not making this product group to gift them and you are quickly in the millions per day. There is a growing market for Adult diapers in all markets!
The vastness of the adult diaper market is ever so slowing closing in on the baby diaper market as World birth rates continue to drop.