I have watched this post for some time, and really didn't want to comment. However - the thread continues to morph off topic.
The Mrs, & I attended both Overland Expo West and Northwest Overland Rally this year. At OEW, I heard an Aussie and a German say "We All Want your Large Pick-up's and Campers" - you Americans want our small diesels and exotic vehicles. I spent a little more time at NOR talking to folks, rig owners and vendors. Everything from a 8X8 Ex-Military Unit, to a brand new Ford Turbo-Diesel Transit Van... There isn't an RV option here in the states, unless you have a couple 100K to throw around.
Three of my friends have built their own Cabins on top of trucks procured for that purpose. Of the 3, the best in my mind - is the fully self contained, Winterized Cabin mounted to a Unimog (Mog purchased in Germany)... We really like the Transit and Sprinter chassis, however feel we need more space for travel 9 months at a time (we retired). So near-term we are building out a new 2018 Tacoma DC, SB, TRD Off-road to be the "GO DO" travel vehicle, and purchase a Travel Trailer that I'll beef up to pull on Off-highway travel... Long-term - is going to be a Renegade Sport with 4X added, and pull the Tacoma on a Trailer. No Win, Win - here.
The RV Industry does not care for "Double Income, No Kids" adults, who want Well-engineered, Rugged, and capable Off-highway Travel Vehicle. I don't want a Class A, C, that I can't drive off-road. As a "Yuppie" in 1988 we purchased a 62 Series LandCrusier, which now has 309,000+ original-owner miles on it. What I want, does not exist. I don't want to spend more for a "Mobilehome with 4 Wheel Drive" than I paid for our current home in 1994... House's and property - appreciate, Vehicles are a depreciating-liability. Overlanding isn't a fade, it's a lifestyle. I don't care if it's an 80 Year-old, driving an old Dodge PU pulling an old Air-stream -or- a set of 30's hanging in a van... Get out, go explore.