This is actually an older ARTE documentary. Not sure when I saw it first but probably 2015ish?
The problem is not so much that people don't use these super-stores anymore, but rather that food items alone have a too low margins to support these capital intensive super-stores and the high-margin non-food items have largely moved to online shops.
What you said is interesting, because in Australia we've pretty much avoided the all-in-one hypermarket model. As in, the general merchandise department stores remain separate to the supermarkets.
We have two chains (Coles and Woolworths) that, between them, make up around 80% of the supermarket market. And unlike the US, most suburban shopping centres have stores from both chains.
Anyway, from your experience, has there been a move away from hypermarkets in Europe?
Here in Europe the mixed shopping mall model has seen a similar decline though. Sure, the food only super-market chains in them are still surviving on the lower margin, but the other shops around them are slowly dying and the entire model is probably not going to survive another decade.
What we see instead is a no-frills budget super-market model (not quite hyper-market like) like ALDI/LIDL that can survive on low margins (but is exploiting farmers and other suppliers) and the small inner-city stores on a 7eleven model that charge significantly higher prices across all items. And of course a lot of online shopping especially in the more rural area, which comes with it's own set of problems.