There are many types of prefabs. With https://parcelplot.org we're using sky bubbles for our off-grid vacation rental projects. They're a fairly luxurious solution and let visitors get a pretty neat view of the stars, and they feel like they're a part of the environment. Of course, that doesn't really work so well in an urban setting.

But I think there's going to be a growing market for luxury prefabs in general. Futuro houses are also worth looking at https://thefuturohouse.com/