At a guess, at least two parts apply, though broadly I do think it's a pretty promising option: 1) EV has been very expensive until relatively recently + RVs a

At a guess, at least two parts apply, though broadly I do think it's a pretty promising option: 1) EV has been very expensive until relatively recently + RVs are a relatively low volume market => slow to re-design all vehicles. Yes, they re-design the stuff on top fairly often, but not AFAIK the chassis itself. I'd definitely be interested if I'm wrong about this though, rapid chassis evolution would probably be interesting to read about. 2) RVs are often used for long-distance and far-from-Civilization™ trips, which very much does not fit well with the (lack of) charging infrastructure. And even when you do go along highways, the charging time (due to higher power use + storage) is going to be substantially longer than on cars, which are already quite lengthy. re 2: Driving to somewhere with RV hookups would mitigate that a lot, which honestly would cover the vast majority of how many RVers I know use their vehicles. Charging overnight or longer is probably fine... but campgrounds will definitely not like you (and a bunch of other RVs) drawing that much power, they're simply not wired for enormous load. It'll take time for that stuff to be rebuilt.