When your grocery store gets a self checkout, do you see your grocery bills go down? What ends up happening is that the grocery store makes more profit, the other stores notice and they too get rid of self checkouts. Your grocery bill remains the same, you are more inconvenienced but all of their profits go up.
Yeah sure. That's the logic that elects Mamdani. Maybe you're confused because instead of going down, prices increased less than they otherwise would have.
Economics happens on the margins where the reality is that store A reduces its costs and lowers its prices to compete with Store B. Or are you paying $100 for a jar of peanut butter?