Yes. That's why I posted this. It's so blatantly evident in Canada. And it doesn't stop at the food industry. We could add telecom in there as well. And what else?
I am sure some don't but there are people I know that shop at loblows and complain about ever increasing pricing, while a block over there is an independently owned grocer with much lower prices.
i.e. Loblaws Peppers in 4 pack $10.99 , next door throw 4 peppers in a bag, comes to $3.90 by weight.
Economists have a metric known as the “four-firm concentration ratio,” sometimes deployed in shorthand as “CR4.” It is a measure of competitiveness in a market for goods or services. When four companies gain a combined market share that is greater than 40 percent, an oligopoly has formed.