That's acceptable if they're not dominant. It's no abuse of dominance. It wouldn't violate Canadian laws if they're not dominant. There are a number of other firms that are competing also for that supplier's product. The supplier that is looking at paying $100,000 to Loblaws as a penalty could also go to Wal-Mart and try to get Wal-Mart's business, or it could go to Farm Boy, or it could go to Costco, or it could go to about a dozen other companies that sell groceries in most towns.
On April 3rd, 2008. See this statement in context.