it's known that companies are raising prices beyond the levels of inflation that are affecting their supply, just so they can get more profit out of it.

Here is the most unlikely citation you'll ever see me post on Hacker News. On FOX News no less, bizarrely hosting an op-ed by Bernie Sanders! But this is the key graf:

> According to a recent study, nearly 54% of the rise in inflation is directly attributable to the astronomical increase in corporate profit margins. In America today, while the working class struggles to put food on the table, fill up their gas tanks and heat their homes, corporate profits are at a 70-year-high.

https://www.foxnews.com/opinion/our-economic-crisis-isnt-inf...

The next several paragraphs are then specific examples: oil industry, airlines, agribusiness, with examples of their profit margins increasing significantly.

now, "a recent study", blah blah where are the numbers etc., sure. However, that's the argument, take it or leave it. Bernie tends to be pretty accurate when he cites stats.