In Canada, five supermarket chains make up of nearly 75% of the retail grocery market, i.e. Loblaws, Costco, Walmart, Sobeys and Metro. While in big cities like Vancouver, Toronto, local grocers and grocers focusing on speciality food take shares in the retail grocery market, in other part of Canada, the big fives dominate. Because of the small market size of Canada and the difficulties of setting up new supply chains, it is very difficult for a n...