I don't think they will be able to make it work. It's becoming ever more obvious that trains are monopolistic, require extensive infrastructure et cetera. On top of that they are slow, people just don't have the time to waste it on trains. I don't think we should be going backwards in time towards slow sleeper trains (where only perhaps an experienced Russian will catch a bit of shut eye). We should be moving forward towards high speed train moving at 500 or hyperloops that stand a chance versus a plane. Or just cleaning up the airplane space through more extensive use of biofuels, hydrogen and electric (for distances smaller than 300km).