Digital Price Tags are standard for like at least 5-10 years now in Europe?

At least in France Carrefour is doing it already for a very long time, and in Germany/Austria REWE Group too.

To this date they aren't used for dynamic pricing, just for saving on labor costs, so that people don't have to run through the store to re tag everything when something is on offer.

The bigger threat to dynamic pricing I see are those stupid apps, which give you personalized coupon codes. There the incentive might be to set a high base price, and discount down based on the pain point of the individual customer.

But I understand the concerns, I would also assume that US Megacorps are trying some completely shady anti-consumer shit.