Market economy: Why air is cheaper than train? [closed]

Opposedly to public misconception, most of the energy is wasted not because of acceleration but because of resistance. And, despite the airplanes are extremely airflow-shaped, the laws of physics say that environment resistance grows as square low with speed, resistance ~ v^2. So, at very high speeds, resistance is pretty high anyway. Furthermore, once head penetrates the air in front of the vehicle, the long tail experiences no resistance. So, in my opinion, very long trains transport thousands of people for free, without spending additional energy. In total, they must waste 100 times less energy than airplane. Nevertheless, when I look at the prices, I start to see the opposite. E.g. Berlin-Geneva train costs at least 250 euros, the flight tickets start at less than 100. So, the market economy accounts the trains as resource wasters. Why?