Canada

The laughable Bank of Canada report even includes the line

Why did this increase in markups not contribute significantly to inflation? We show that markup growth reached its highest level because of a contraction in firms’ costs [...] during the pandemic-related public health interventions

So when their costs go down they keep the prices the same and pocket the difference, BoC report verdict "profit growth without inflation". So what happens when costs go back up?

We observe a mild contribution of markup growth to inflation in 2021, partially explained by demand rebounding faster than costs. However, the fact that markup growth fell to zero the following year indicates that firms were likely smoothing out their price increases [...] rather than leveraging increases in market power.

So when the costs go back up, they pass 100% of the cost to the consumer and keep their new higher profit margins (no change in markup). BoC verdict "the inflation has nothing to do with profit growth". Amazing!

If industry follows this "price ratchet" mechanism profit margins can go to infinity "without causing inflation" according to BoC. Absolutely galaxy brain levels of economic genius.

They really think we're idiots.