Infeasible?

Perhaps it is indeed infeasible today because of differences in economics and regulation, but: We already created it once -- for huge areas.

As evidence supporting the notion of this prior existence, I'd like to introduce this 1908 map entitled Electric Railway Map of Ohio, Indiana, and Michigan: https://curtiswrightmaps.com/product/electric-railway-map-of...

(Those lines were real, and they were also generally privately-funded.)