Manufacturing of RVs in Europe are closer to automotive industry than in NA. Engineering content is high in designing and in manufacturing reflecting in good design and lower costs.
As long as folks in NA are willing to pay for camper vans for 2 stratospheric prices not much change is coming here.
I often see buyers justification for high prices, but but but we have black tanks, but but but we have Lithium, but but but if you have to ask for price dont buy it, but but but it is difficult to manufacture inside a still chassis, but but but B class is for maximum for 2, folks, often retires.
This is 5 years old video showing Adria manufacturing in Slovenia.