Grid capacity is a bigger problem than people want to admit, just saying charge at night isn't really a solution. My state is already struggling to update infrastructure just from legal marijuana (pot farms use a ton of electricity), more charging stations just makes that harder.
I mean conversely if it's not necessary, then it's not going to happen - that's how governments tend to treat vital services (and voters reward them for it: everyone's got an opinion on why construction crews are working on the poles outside their house).
The reality of grid upgrades is unless we make the problem worse, it won't get better.
But yes, this will solve itself. Each year charging becomes faster, each year travel distance longer, it will auto solve.
One thing people overlook, is many places have blackouts! If tomorrow, every person switched to electric cars, it would be disaster.
So as people switch, we'll have to build more capacity into the grid. Not just production, but substations, and transfer lines too.
And this will happen.