no one
who pays for damage
insurance, just like in a road accident
who compensates families who lost loved ones
insurance, just like in a road accident
who cleans up the mess on the streets / roofs / river / ponds / other
those whose job it is to clean up said commodities after whatever accident
I agree this is not going to happen anywhere soon, but not for your reasons. The blocking factors are
* physical delivery - even to a person living on the -2
* legally binding acceptance of delivery - requires a signature, doesn't it? The signature may be digital, in my country one can legally sign a document by presenting the eID card and typing the pin code. But it still needs the physical presence of the adressee.