Here is who I think might be the one taking this on:

Loblaw Companies operates:
Atlantic Cash & Carry
Atlantic Superstore
Axep
Bloor Street Market
Dominion
Les Entrepôts Presto
Extra Foods
Fortinos
Freshmart
L'Intermarché
Loblaws / Loblaw GreatFood / Loblaws CityMarket
Lucky Dollar Foods
Maxi / Maxi & Cie
NG Cash & Carry
No Frills
Provigo
Real Canadian Superstore
SaveEasy
Shop Easy Foods
Shoppers Drug Mart / Pharmaprix
SuperValu
T & T Supermarket
Valu-mart
Wholesale Club / Club Entrepôt
Your Independent Grocer / Independent CityMarket
Zehrs Markets