[sfifs]

If a grocery store raises shelf prices across the board to be able to give discounts to a few, it will likely to lose customer footfalls to stores that don't. Grocery globally is generally (except food deserts in high crime areas) is a hyper competitive business with very low margins. So preventing personalized price increases should be the policy priority.

[brewdad]

There has been a lot of consolidation in the industry over the past decade. There are three major grocery "brands" in my city. All of them have the same parent company. Quitting one store to go to another is about as effective as the people who boycotted Bud Light by switching to Modelo.