Here in the UK (and I believe most of Europe), they’re planning to ban sales of new ICE cars in I believe 2030. As such, 100% uptake (or close enough, perhaps there will some exceptions for specialised use cases) is almost guaranteed.
[1] https://carthrust.com/2021/06/28/vw-says-no-to-ice-powered-c...
Where I live there is already a pilot scheme in operation that implements this. It does need to be rolled out more widely, but I think the technology is relatively simple, so it might well be doable. 8 years to roll it out doesn't sound ridiculous (although we probably ought to get a move on). Also, remember that 2030 is only the date for halting new car sales. Most cars will still be ICE for at least 5 years after that.
I don't want to install chargers everywhere. I just want a thought out plan.
IE have a planned build for the electric backbone sometime in the future, and each owner can build their part and be connected when they wish.