https://en.wikipedia.org/wiki/Retail#Global_top_ten_retailer...
https://en.wikipedia.org/wiki/Retail#Global_top_ten_retailer...
Amazon will capture the premium/delivery segment. ALDI and Lidl will capture the discount segment.
Kroger is right in between, a very, very tough position to hold.
Basically, there's three market segments, not two.
Whole Foods is too pricy for me for a full grocery shop but I can afford and like to eat better than discount stores.
In Germany even millionaire households shop at Lidl or ALDI because nobody needs 50 types of ketchup or milk. People don't like wasting lifetime when shopping and don't like to select one type of milk out of 20 different types in a wide price range that almost taste like the same. There is no USP for many different products except for their label/branding/image.
This transition took quite some time but the high turnover volume at hard discounters usually also means fresher vegetables and fruits.
ALDI and Lidl stores usually get supplies multiple times per day and have almost no local stock besides what's in the stores.
The quality of the food in general is very good, often better than the competitors, plus it's cheaper.
Keep in mind Aldi/Lidl have went from 0% marketshare in the UK to >12% in about 20 years - very impressive growth.