It's true, it takes massive investment to produce a really good efficient rail system, and of course political will. In the UK High Speed 2 or HS2 will link London Birmingham Manchester and Leeds. Cost is estimated to be $60bn. There has been huge opposition but it will happen.
As GRJ says the German network is fantastic, fast and efficient. As the minute hand turns to the allotted time the train is pulling into the station. I once travelled to Hanover via Eurostar, going down through Belgium where they changed locos in the middle of the night hardly waking us in the sleeper. All this costs and in the UK fares have constantly risen by more than inflation.