Comment by ghaff

You need a critical mass of volume though. You can get pretty nice suites on Amtrak today on the long-haul routes. It's admittedly not luxury in the sense of really first-class food and everyone dressing up but probably a nice slow travel experience so long as you don't care too much about arriving as scheduled. I'm not convinced there's that big a market for don't care about cost + don't care about time.