Dear Mr. "Know it all", here is a photo of where Kaufland stores are in Berlin.
You can easily check it in google.
Is this "no man's land"?
Or what do you mean "regional territory "?
I know EU retail landscape much better than you could imagine.
German retail landscape in particular.
Kaufland isn't a grosshandler.
It's a discount hypermarket.
I can explain to you what this means from various points of view, if you need this.
By the way, please check Kaufland market share / turnover.
And usually their shelves have everything, meaning Out Of Stock situation there is NOT business as usual, as opposed to Lidl or Aldi shelves in the evening.
So, having massive out of stock situations in various product categories, in various parts of the country is a signal of a big issue.