I doubt it as there is plenty of competition. Inflation means there overhead cost goes up so at some point they need to raise the price. There are industries that lack competition but food often isn't one of them.
It takes a lot of under-rock living to think that what we see currently isn't corporate greed. There is not nearly as much competition as there used to be, in any industry, including food. We have a word for it -- collusion -- but no enforcement against it for at least 50 years.