That kind of happened to supersonic travel. We don’t have Concorde any more but we still know how to make them, and there’s a lot of development into unmanned supersonic flight. Now I have a hankering to go to an airplane museum.
There are various startups like Boom who think a new generation of supersonics could be a profitable niche, but they were a long shot at best of times and much more so in these times. https://boomsupersonic.com/