Canadian chains...and the three companies that own them all...
Loblaws, the largest of the bunch, was an instrumental player in the illegal bread price fixing scheme. They are in the news often for the things they do - the latest is installing a system in some of their stores where if you use a self-checkout machine, after you are done there is an automatic gate that you must scan your receipt through before it lets you out of the store. It treats everyone as if they are criminals, and I do hope someone challenges it in the courts - it's false imprisonment. They cannot stop you without a specific allegation that you personally have stolen something.
This was their second plan - they originally tried using security guards to check receipts as you left the store, something that unless you have agreed to as part of a membership style store (like Costco) is also illegal.
This sort of hubris shows that without significant competition, these companies act without regard to laws and people's rights. They know that in many smaller communities they are the only store, so people cannot choose a different option.