Please try and convince me that someone operating a fleet of delivery robots that costs many thousands of euros each is going to be 'cheaper' than utilising the

Please try and convince me that someone operating a fleet of delivery robots that costs many thousands of euros each is going to be 'cheaper' than utilising the current model of people + their own cars. Where I live (Estonia), delivery adds a few euros to the cost of food (for example). Even if that was reduced to a single euro that wouldn't make any difference to if we ordered food to home or not.