Why fast ocean liners largely lost their market

Could fast ocean liners still work as modern historical cruise ships?

They face a narrow market because they offer fewer cruise amenities than modern liners and are much slower than long-haul aircraft.

Queen Mary 2 shows how rare the remaining ocean-liner niche has become. Historical fast liners were designed around transport and schedule, with fewer of the accommodations and attractions expected of a modern cruise ship. They also cannot compete with aircraft for crossing time. A vessel type can remain culturally attractive after losing the economic conditions that once made it a mainstream service.