There must be market for smaller motorhomes, 25 feet and under, because the major manufacturers have added more offerings in this size range, particularly B and C types on European-size vans and cab-chassis combinations (Transit, Sprinter, Ducato/Promaster). I don't know about younger people wanting them, but they've been popular with my (70+) age group, downsizing from large towables and medium-length A and C motorhomes, as they change the way they use there RV from second home more toward travel vehicle. My age group is also paying premium prices for restored VW-based camper vans, like those we used 40-50 years ago when it was all more like camping than house on wheels.