If like many installations they are supply limited, slower charger points would allow multiple vehicles to be charged at same time achieve the same without having to monitor charge progress.
If you could get 32A per phase, ie a 22kW (3 * 32A) capable 3 phase installation, you would instead get 3 cars simultaneously charging at 7kW, even omitting that a Tesla is unlikely to benefit from the whole 22kW (and a Model 3 only benefiting from 11kW)
Taking that a step further, you would get 6 cars simultaneously charging at 3-4kW, the latter adding 14kWh per 4 hour period, enough for 40 miles (80 at 32A) every 4 hours on charge for most vehicles all years round miles, more in summer.
Or around 10 cars simultaneously charging at 10A/2.3kW - using a dedicated Type 2 charge point rather than 13A socket and a mobile connector such as UMC- leaving them plugged in all working day, 8 hours charging would yield over 18kWh for each vehicle, over 50 miles added for a typical EV. All for the similar power requirements as a single 22kW charge point.
A host of load balanced charge points allowing adaptive albeit inconsistent charge rates would also be a good flexible option.
imho, more lower powered charge points is probably more useful than one or two high powered charge points. Load balancing offers even more flexibility.
