not the case in literally any pedestrian friendly city - it's called roofs lol!

but for now, you are still correct. new york's haphazard street shacks threw up during covid certainly won't cut it - but i am sure that restaurants will invest in proper outdoor infrastructure once they have a guarantee that their street is going to be pedestrianized. unless the food is bomb as hell, people will choose the restaurant next door with outdoor heaters, enclosed seating, and properly sealed rain-proof roofs.