yup :) https://time.com/6108578/why-flying-is-more-expensive-than-taking-the-train/

it sounds counterintuitive but the main reason is that train companies make more money from transporting goods such as coal, hay, etc. while transporting people has lower profit margins for domestic travel. it also takes longer to go by train, which obviously makes accommodations, food, etc. more expensive, especially for long distances (the U.S. is much larger than the U.K., making coordination of these types of trips more difficult, and meaning that people traveling domestically in the U.S. are traveling longer distances on average)