2019 FE Photon Red
You are correct, that is the point. Cell service or internet access is available in distant rural areas, but is not of the same quality as, say in Chicago or NY. In the same vein, EV charging should be available, but at a federally mandated minimal level, unless market forces say otherwise.That's the point and there is already precedent. Cellular providers are obliged to cover less profitable areas if they want the right to the spectrum to make money selling cell service. This is because the common good for society is to have reliable cellular service for most citizens because this allows rural citizens to have a similar quality of life as urban dwellers and because it facilitates the adoption of cellular communications overall which benefits both consumer and supplier. Sometimes the government has to step in a level the playing field or fill a gap where there is one, usually by offering incentives of some sort for the providers. This is one way broadband internet has been deployed in rural areas. Either companies were incentivized to extend service, or non-profit companies were crated and government subsidized to do this.
Bear in mind that L3 charging primarily benefits thru travellers, who overwhelmingly will be coming from urban areas.
The proposal suggested L3 charging stations every 50 miles "along designated alternative fuel corridors". This doesn't equate to every location in the US being within 50miles of a charging station. And even if it did, some would complain about having to deviate from a direct route to a location in order to charge.