You can't privatize what can't make money in itself. By that I mean, rail is beneficial to the entire economy of a country. This profit is not something a rail company can benefit from but a country can. Serving low traffic areas are a loss business but vital for a country to grow.
Same for fiber infrastructure, running fiber into a desolate town may not be profitable but giving the chance for some kid in that town to build the next unicorn from his home benefits the entire nation. Not all talent is in the cities.
Same for fiber infrastructure, running fiber into a desolate town may not be profitable but giving the chance for some kid in that town to build the next unicorn from his home benefits the entire nation. Not all talent is in the cities.