Just to let you know, nobody drive a car in Paris to go do groceries. Everything is done walking around our flat or on our way.

It is quite rare in big european cities that people take their cars (if they have any) to the supermarket.

I live in Berlin and I know several people who go to the supermarket by car. Most supermarkets also have nonempty parking lots which indicates that at least some people use their car for shopping.

Then they will have contributed very little. Literally, every major grocer in the city does delivery now. They also don't come from out in the suburbs. The neighbourhood store has their own fleet and can get it to you the same day within a few hours of placing the order.

If the competition already provides delivery, why ban Amazon from doing it as well?

Nobody talks about banning Amazon.