Not sure if you guys have heared of this but TESCO are launching self service pickup points this year or sometime in near future. Concept is supposed to be called "click and drop" whereby you order something and it gets delviered to this "central post office type thing" where you enter your pin and pick up ur groceries.
I believe it is the first supermarket to make this move, and ergo some investors may believe that this will put them at an advantage over others. I however Do not entirely agree, but that may be an indication of the movements you are seeing.