The new wall connector also says it can run at 277V for commercial installations, and 277V*72A is still about 20kW charging. So hopefully new commercial installs will put them on their 277/480V panels. It will also be interesting to see if the old chargers will do 11/22kW (277V*40/80A), or just limit down to 10/20kW still.
If it holds to what they do with Model X, at 277V you will be limited to 63A.
As a result, there is no reason for people to do crazy stuff like put boost transformers on their circuits on the newer cars to gain a few minutes at a significant efficiency loss.