I have always thought that powder was a much more shipping/space efficient media as compared to liquid. The bottles for liquids leave wasted space in shipping cartons, plus they need to get recycled. Nowhere near as many wind up in landfills as they once did, but this is still a potential situation.
With cartons and powder, boxes cube-out a shipping carton, and the cartons can cube-out a truck. I don't see how you can ship more efficiently, other than making the whole thing smaller, as P&G has done.
Here in Charlotte, one of our stores still cares a great many powders. I was shocked at lunch today to find the powder section every bit as large as the liquid, bottom of shelves tot he top! It's the only place I know of to get Tide Mountain Spring in powder and two scents of Tide w/Bleach powder.
It will be interesting to see what Sun does with Surf as a response to this. They seem to be putting heavy effort into Surf, with new formulas with Baking Soda and an Oxi-Active version too. Not sure if Sun is still making an All powder or not.
I just used some old Surf tablets - they must have been 8-10 years old? They were great - and obviously very concentrated ss compared to a scoop-full of P&G current powder.
Gordon