One charger can charge many cars. Especially if you designate the parking spots near the posts as reserved for EV charging. Once you have a significant portion

One charger can charge many cars. Especially if you designate the parking spots near the posts as reserved for EV charging. Once you have a significant portion/majority of cars on a street being electric, then yes, demand may exceed what can be supplied by the posts. But, at least for the next few years, EVs are still a minority in most cities.