This is pretty idealistic. What winds up happening around me is the amazon guy parks their car in the middle of the road AND also has a cart to hit multiple houses at the same time in that region. Furniture deliveries or even moving trucks can block our street for 30 minutes at a time. It is almost as bad as garbage day (ya, you aren't getting through our street on Tuesday morning if you time it wrong).
This would all be solved if we just had delivery parking spaces and got rid of on street parking for everyone else. Really, just that part is just where everything falls apart quickly. This is why traffic seems so much better in Europe (at least where I've lived, like in Switzerland), deliveries work, cars are not parked on the street except at a few very expensive parking spaces.
I was basically describing how most deliveries happen where I live. Not all, and we could do with forcing the remainder to less disruptive means, but the significant majority.