

People in big wealthy countries underestimate how far those nations can fall.
Argentina was the 5th richest country in the World at one point, and look at them now.
The higher you are, the more you can fall before hitting a new stable state: just look at those places which were once great imperial nations like Greece, Iran, Turkey or Egypt. I mean, most of the Middle East was once the seat of some great nation or other and look at them now.
The US going all the way down to the level of wealth per capita of, say, Russia, is a distinct possibility, if the structural elements which supported its high economic output start breaking (so, things like Education, the productivity of its companies and the belief of outsiders that investing in America is safe and has a good ROI, all things getting worse) and the higher a nation is in that scale the more such structural supports are required to keep it there (for example, not other developed nations don’t relly on their currency being the World’s Reserve Currency to prop-up its public finances), so the harder it is to stay there.
I lived in a couple of countries on Europe and the daily and bi-daily shopping is only really for people who live in big cities and commute by public transport and will pass by a small grocery shop on their way home from work.
As far as I can tell most people do a single weekly shopping generally by driving to a supermarket or even hypermarket either on the weekend or at the end of a working day, hence the popularity of such large surfaces.
Even in places like The Netherlands people have side bags on their bicycles and can just cycle to a supermarket once or twice a week if they don’t feel like driving there and bring the shopping on the side bags.
From my own experience with my grandparents (farmers in Portugal), rural food planing timeframes are even longer than a week, as people relied (at least 50+ years ago) on preserved meats and longer duration things like dried pulses, certain fruits, and staples like potatoes for months or even a whole year and then add in season fruits and vegetables and even just go outside and pick up whatever was ripe then from a plot next to their home (so, for example, make soup with some salted pork bellies and chipeas from their food stores and some spinach and carrots picked up from from a farming plot near the house).
Anyways, even in Europe doing a weekly shopping is generally more convenient.
Mind you, it’s great when you live inside a big enough city and you can just hop out of the tram a stop or two early on your way home and go by a mini-market to buy, say, some milk and fresh vegetables, but that’s not how it generally works for most people, mainly because even in a big city, unless you live right by the store it’s more time efficient to do one big grocery shopping a week were you can go to bigger places with more selection.