I have 3x25A fuses at 230V (which is normal here, you either have 3x20 or 3x25 typically) so I could probably run a 22kW charger. But I couldn't run it and run

I have 3x25A fuses at 230V (which is normal here, you either have 3x20 or 3x25 typically) so I could probably run a 22kW charger. But I couldn't run it and run much other stuff at the same time! I guess the solution is to have something store the capacity, i.e. a second battery. If one really needs to charge at home very quickly (e.g. you are a taxi driver or have some other specific reason) and you can't overload the grid, then the solution must be to slowly charge a battery at home when the car is used, just like most EV owners slowly charge the car over night. Then the home battery can be quickly emptied into the car for a fast charge. In the end, it's just like having 2EVs where one is charging while the other isn't. And of course, buying a 100kWh wall battery is going to also set you back a large part of the cost of a second car too, just like your $20k for a better electricity connection. BUT - the dual battery solution doesn't have the tragedy of the commons issue where not everyone can do it. I doubt more than a single digit % would ever consider needing fast charge at home though.