Inflation is a macroeconomic phenomenon. It’s silly to attack grocery stores for an economy-wide rise in the price level. As if Walmart wasn’t greedy during the 2010s when inflation was quiescent, and suddenly became greedy now, just because.
What actually caused inflation was the big spending by both Trump and Biden, not funded by tax increases. The US federal budget deficit is now over 6 percent of GDP, and is projected to keep ramping up. And the Federal Reserve has been slow to raise interest rates to sterilize various federal spending increases, like the Covid spending packages and the Inflation Reduction Act. These are classic ingredients for inflation.
So, plenty of blame to go around, but it’s mostly in Washington, not individual companies here and there.