There are some cases where BEVs are going to be a challenge, like extreme northern climates and rural areas of the west. I mean, how much infrastructure will be practical to put in for Wyoming or western Kansas, or Nebraska?
The cost of DCFC units are falling rapidly as more units are going into the field. And then the number of units required will scale with the local population or traffic on the interstate. So there might never be as many DCFC in Wyoming as in California, but there could easily be as many as needed.
A DCFC unit is a very simple and durable device (in principle) with lower upkeep than a gasoline station. And there are enough gasoline stations in Wyoming to support the need.