We had a similar thing in my home town in Australia at some point too: the big selling point for me, at least, was that when you were hanging out at a friend's

We had a similar thing in my home town in Australia at some point too: the big selling point for me, at least, was that when you were hanging out at a friend's place and you decided that you just wanted to order in, you no longer had to agree on what to get :) Another business that used to operate, at least, was a liquor delivery service, but only to restaurants. Back there, at least, a restaurant can be licensed to serve liquor, or licensed for BYO (which I presume was cheaper). So what would happen would be a restaurant would be licensed for BYO, but still have a wine menu: when you ordered off the menu, you were technically ordering through the delivery service and they would drop the wine off (they were driving around all the time). So you may have waited a little longer, but it was cheaper for everyone...