So- has anyone else noticed this fascinating fact - lol 
Two issues here- one if the constant changes made by big business to 'fool' us customers re price- be it the cutting down of content weight, or size or Mars bars, whatever.
And the other the environmental ones- those huge cardboard inner rolls and the very loosely wound loo paper must mean about a doubling of the size of the packets, be it 4s or 12s, etc- which in turn means much more transport, fuel, etc.
Shouldn't we move to coreless loo paper to avoid all the cardboard and transport waste anyhow (only problem is that our current holders would not fit anylonger- so more waste in the short-term. Most businesses here already have those coreless holders now). May seem daft, but multiplied over 10s of 1000s of rolls per year- it would make quite a difference in more ways than one.