the Government of Canada should consider introducing a windfall profits tax on large, price-setting corporations to disincentivize excess hikes in their profit margins for these items

Right, but it's broader than just targeting 3 large grocery chains. AFAIK there's no current law that allows the Government to tax an individual at a rate that isn't on the books, and something like this is still years away (it's just a recommendation after a year of study for starters).

It doesn't help anyone struggling to put food on the table in the short term sadly, but hey let's all just blast off into stupid land and suggest taxing them is the easy answer that will solve all of our problems. This isn't Facebook, and the original poster's suggestion was fucking retarded.