You are not getting the core of the problem: unless you charge a BEV from your own outlet, it will be too expensive to operate compared to (bio)fuel and/or hydrogen. Or put differently: what is going to put a stop to BEV adoption at some point is the lack of people who can charge a BEV from their own outlets.
I don't agree with the premise.
As I stated before the time an EV needs to spend charging is about 5% of its time spent on the road, even if it's only a 7kW post.
This can be done at work, on the street, at the supermarket, at the mall, wherever...
And 50% of those owning a car will be able to charge at home, because they have off street parking or a driveway.
It is all about providing opportunity charging. Stop thinking about charging like it's refuelling. It's not. It's more like grazing for electrons.
Yes we do need thousands of chargers, but your 25 billion EUR assessment seems crazy to me. The local council installed a small number of EV chargers and they were under the 5kEUR figure you quote for 7kW, this was just for two at a time. Fill a car park with 40 and the cost will fall even further.