Everything is a tradeoff. At this point there are more valuable things to be spending money on than making chargers that are as fast as possible. Not all cars can charge at 500+kWhs many cannot even do 100kWhs. IMO better to spend money upgrading all the slow 7-50kWh chargers. As well as putting in more slow charging near residents. Kerb charging for people that dont have a driveway in cities or chargers for those living in flats. That would serve people better then spending more money on something very few can actually benefit from.