K, but what I really meant to say was rather why do the bottle return thing at all, if you could have a few standard bottles which last decades, and fill them at the store, supermarket, etc. from kegs, canisters, and return only those, instead of single bottles?
Edit: where the kegs/canisters take the part of standardized liquid containers, as it is common in gastronomy already?
Just need to have a machine which can do the refills from store to longlife bottle quickly and clean at the store.
Editedit: Trying a braindump, from my impressions over the past decades, even long before "Grüner Punkt" and other return systems, just regarding bottles.
In larger supermarkets, and stores specializing in selling bottled stuff, there are always large areas for the returns, inside and outside. All for gathering and storing that stuff, to send it back to whereever and whenever. Sometimes with larger forklifts, stacking pallets/boxes 3 storeys high. (about 9 to 12 pallets, or boxes)
This is the cult of the bottle! Make work!
