I'm not entirely sure your conclusion is correct. Almost 40% of all US freight is moved via rail. The reason passenger trains suck in the US is because our railroads are built for and prioritized for freight. When Berkshire Hathaway purchased BNSF, they noted that trains connect companies between the two coasts of the US. It is often the case that a company that produces something is on one coast but the port where its products go out is literally a continent away. Even domestically bound products have to be shipped between coasts because of how population centers in the US are situated. So assuming the US population and industries continue to grow, I think freight rail will continue to be in demand.