You don't need fast chargers for domestic use.
For simplicity, mentally split the charger types into fast & slow.
The slow chargers can charge from near-empty to near-full in a day or a night. They are origin or destination chargers, i.e. mostly at your home or your work. These should be 13A or 16A, supplies and barely require any infrastructure.
The fast chargers can charge a substantial amount of your battery in less than half an hour. They are for transitory use, mostly motorways, where people need to complete long journeys. These require very substantial electricity supplies, such that a typical multi-charger motorway site will require an additional (or upgraded) grid connection. Even then I anticipate mid-Summer congestion .... (in a UK context, or say, Xmas or Thanksgiving, etc)
At present we get all our liquid fuel at filling stations. In the future we might get (say) three quarters of it at origin or destination, and the other quarter at transit stations.
Over the next 20-years a lot of filling stations are going to go sub-economic.
All the electricity (utility) companies are all over this like a rash, so too are the major oils, so too are the charger pure-plays, so too are the motor manufacturers.
In the UK-context the key issue that needs to be resolved is that of parking space allocation and provision of
slow chargers on residential streets, i.e. terraces, apartment blocks with no dedicated parking: all the people with no personal driveway, or no controlled communal land/parking. This is why (for example) it is difficult for me to be an EV early-adopter as I live in a terrace with permit-parking and quite frequently my car is parked 100m up the road, so I can't even (illegally ?) run an extension cord across 1m of pavement at night.
A large part of the plays that I see for Chargemaster etc (and quite likely supermarkets) is to replace the residential parking charging, i.e. it is a bet that the parking space allocation etc
will not get resolved (in the UK). That in turn will drive people like me to use what may be slow (or become medium) speed chargers at supermarket carparks whilst doing the shopping. It is the only use-case I can see that will provide a substitute for on-street origin charging in sufficient volume.
(and yes, I do inject my point-of-view into some of the people making some of these decisions
)
Just my 2euc,
- dspp