There are many things at play here...but one of the largest factors is supplier consolidation: fewer companies hold the whole market, making for less competition. And then there is Wall Street with it's short term expectations for profit increases. Prices are certainly up; but corporate profits are "to the moon". Did Frito-Lay need to raise the price of that snack package or did they do it because they could? And be sure you are also looking at the amount of product in the package. "Shrinkflation" is also at play...smaller quantities for the same money, followed by...a price increase when you least expect it.
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BTW, folks...don't let politics get into this thread. Not permitted.