All is not lost. This lovely little Boulangerie may be taking an Easter break but many of the shops in Centre Ville are open and there are shoppers in there. Lille has a nice collection of local shops mixed in with the usual chains.
I uncovered an enormous Carrefour next to the Eurocity station which sells a staggering variety of products. This shopping centre is where I have seen the biggest number of shoppers so far.