Yes, it is definitely possible with good engineering, modern technologies, and well-run factory. But, but, but, how about black tank, microwave, generator, OK. $50K + $1K black tank + $0.5K microwave + $3.5 generator = $55K plus $30K lithium or nuclear power plant.
My suggestion for NA RV manufacturers would be to confiscate staple guns to begin 21st Century manufacturing, if Westfalia, Adria, Rapido and many other EU manufacturers can do it why can’t we. Big problem is that any mom and pop shop can do a conversion charging $X00K so why not, unless price paradigm shift would happen in NA. The Winnebago and Hymer could have provided a prelude and most likely Rapido knows it.