In Norway the milkman was gone long before my time, and Brødboksen got bankrupt, so they're not running anymore.

I was in Russia first time in 1998, and then they still had another kind of milk delivery service - every morning people would be queuing by the milk delivery tank truck, with their own containers! I believe this service lasted into this millennium, maybe it still is a thing on the remote country side.

I think the thing that really killed daily milk delivery (and the tank car delivery) was not the supermarkets, but improved hygienic conditions at the farms and good pasteurization at the diaries. It's no point with daily milk deliveries when the milk can stand for two weeks in the fridge without getting bad.

The flipside is that one cannot easily make sour milk at home anymore. The milk from the diary doesn't go sour, it goes bad. Milk directly from the farmer is a big no-no here in Norway due to laws and regulations, one has to know a farmer (or be a farmer) to get real, fresh milk.