Apartment dwellers will want to use the fastest charger regularly. They have to sit in their cars in some desolate location for the whole time, and they have to charge every week. Not an experience to prolong.
If apartment dwellers that park on the street had access to these slow chargers, for example, using power from street light circuits, they could handle 90% of their charging needs, using fast chargers for days where they drove an unusually long ways.
In Europe, or other 240V places, the slow charger is about twice as fast, so the situations where a fast charger is needed are even less.
Part of it is that Tesla levies a fee for leaving the car plugged in after it charges, so we can't go too far.