Isn't transport by plane just cheaper to provide than rail? You don't need to maintain railway lines, bridges, tunnels, points, overhead power lines, signalling or intermediate stations. Routing congestion is reduced because planes can move in 3D. There is no rolling resistance and air friction is reduced due to flying high-up where the air is thin. Airports are built away from city centres, where land is cheap. The natural monopolies of rail-track providers are avoided. I think it would be amazing if train travel was as cheap as air travel.