> the number of high-speed chargers are tiny (think a couple of locations per large city)
That's not so far off. Even large cities in North America have no more than a few dozen gas stations (and the UK likely fewer still due to things like London's congestion pricing reducing vehicle count). Once-a-week-or-so fueling doesn't really require a huge amount of infrastructure. That's one of the reasons we're all addicted to driving in the first place, after all.
And charging stations are, of course, absolutely dirt cheap to build relative to fuel stations. They'll keep up with demand easily as the driving stock expands. The limit, if there is one, is going to be the electrical distribution infrastructure. High voltage lines into cities aren't as cheap as we'd want.
That's not so far off. Even large cities in North America have no more than a few dozen gas stations (and the UK likely fewer still due to things like London's congestion pricing reducing vehicle count). Once-a-week-or-so fueling doesn't really require a huge amount of infrastructure. That's one of the reasons we're all addicted to driving in the first place, after all.
And charging stations are, of course, absolutely dirt cheap to build relative to fuel stations. They'll keep up with demand easily as the driving stock expands. The limit, if there is one, is going to be the electrical distribution infrastructure. High voltage lines into cities aren't as cheap as we'd want.