I have compared prices in fast-charging stations to gasoline here in Sweden, and a gasoline car get more miles for the money. The price can be up to 100x, or 10000% that of the market price that the fast-charging stations buy their electricity from.
And even with that, very few places seems to be willing to build competing charging stations that will undercut those prices. The only way to actually save money is to have a charging stations at home or at work where you pay the normal (through still very high) cost that the utility company take.
In Greece, fast charging is 4x more expensive than slow charging at home. Slow electricity is around 4x cheaper than gas, so you're right, fast charging makes it about even.
Good thing I only need to fast charge a few times a year, on long trips (or consecutive trips away from home/a plug).
I have found fast-charging prices near where I live to be fairly competitive with gasoline per-mile. The lower maintenance costs of an EV are icing on the cake, so to speak.
But I actually do most of my charging as trickle-charging from a regular home outlet, despite it being slow; it adds about 40 miles of range per 24 hours of charging. My car sits in my driveway most of the time so that's actually sufficient most of the time.