Plenty of very rich people in that group. I personally know of at least one couple whose net worth is in the hundreds of millions who live in an RV. Lots of that group are retirees who want to travel full-time, but opted for land transport instead of a yacht.

Keep in mind that right now, with gas or diesel motors, there’s winnebagos which almost reach half a million dollars new.

I'm in that group, and could afford (and am interested) in owning one of these.

Many offset the downsides of the generator with solar, which is increasingly viable, but having it all in a EV especially considering fuel prices is a dream. Even then, using the generator only applies with boondocking. When i'm working full time on a project on the road, I just go to a campground or RV park with full hookups.