In UK a train from London to Edinburgh (North of UK, Scotland) costs more than a plane. I just don't understand how that makes any sense, how can a train be more expensive than a plane.
Then the planes don't pay their full cost as they emit a lot of CO2 but aviation fuel is not taxed so you get planes that already have quite a lot of structural advantages getting even cheaper.
Budget airlines are probably also run a lot more efficiently than most train systems