A 777 can take you from Warsaw to New York, which no train can do in any time. For a cost of 737, you can have five trains. But a 737 can make a 1000 km flight

A 777 can take you from Warsaw to New York, which no train can do in any time. For a cost of 737, you can have five trains. But a 737 can make a 1000 km flight, be back, make another 1000 km flight, and be back — in the time it takes a train to make one-way 1000 km ride. Your points are valid, but it takes more 400-seat trains to provide for a good intercity connection where one plane can do it. Additionally, in the time the plane flights from point A to point B, the air has lots of space to accommodate other planes. But trains need to share the limited tracks resource — e.g. one one-way tracks, you can't have two trains going in opposite directions, or they will crash into each other. We have a one-way regional rail line that has double tracks only on the stations, so that's where the trains can pass one another. A failure of any train to be there on time wrecks the whole day schedule.