I think that model was established by AAPRCO, myself as well as other groups such as Friends of 261 that offer such trips to private individuals or corporations regularly and hope to do so in the future as a means to raise funds using idle equipment. Carl Sandberg of the 261 group maintains Amtrak compatible equipment for the sole purpose of leasing or chartering it out and he does have a client base it seems outside of the railfan community. He seems to have plans to convert cars post pandemic to Amtrak compatible so I do not think the business or demand is dead…just yet. Other groups as well have expressed an interest to convert some of their cars to Amtrak compatibility in the future at some point but the plans are tabled right now as they are in wait and see mode (IRM for example…which has a large stock of passenger cars from the streamline era parked in Union).
BTW, heard a rumor Friends of 261 was actively looking for a decent Dining Car, preferably of Milwaukee Road lineage for both private charters and fan trips. Just a rumor via third party.
So the problem here is exactly what Brightline is facing with financing for it’s Florida and expansion models. So far there is no financially sustainable example in this market place in the United States. I often wonder that if the Rocky Mountaineer makes it here in at least one market if that would encourage others to try. RMR has been successful in Canada but without slamming Canadian business people too hard. They tend not to do so well in the Unit