Given that there are no other stores in its market segment still in business (though there is apparently an attempt to revive Zellers now that The Bay is gone and someone else holds the trademark), I don't think you can fairly say that. For many, as
@Kimmio Laughterlove indicates, it is the best option available. Even some of the "Dollar" (usually they are more like $2-5 nowadays) stores, which have kind of taken over the bargain niche once held by brands like Biway and Bargain Harold's, are American chains.
And this as well. They are providing employment for probably thousands of Canadian workers, many of them students, entry level, and post-retirement in need of income to supplement their pensions.