Well there are some people who want that luxury motor home lifestyle and will spend, say, a half million on one versus buying a home. My cousin is that type of person and considered doing exactly that at one point in his life about twenty years ago - socking every nickel he had at that time into a motor home and giving up on a stationary existence. But by and large such people are going to buy a used one, for example that 2011 Newell that Rob claims he bought in 2013, for $1.3M is now worth less than a third of that.
If you don't want a house, like the motor home lifestyle, and you're a cash type person and somehow you accumulated five hundred grand I could see buying a used luxury motor home - whoever buys this 2011 Newell this fall that Rob owns
is going to pay maybe four hundred K for it.
But just coming out of a bankruptcy as Rob had, and then supposedly getting together, as you point out, after taxes around $1.7M and then putting it all into a two year old motor home at practically full price does not compute, which is why I made my comparison to doing something like that, and Hooker's blowing the three grand he made off that grift in The Sting on one spin of a crooked roulette wheel.
Over all, given that I have now done a little
reading on how Kane and Nestor unearthed the double up bug, and how quickly they were discovered and outed even for taking just a half million, I think the odds of anyone else both discovering this bug and taking advantage of it for years are very remote.
Consider also - if Rob really did unearth this bug and take advantage of it over
years (which implies a very slow and drawn out take), saved most all of it and not spent it along the way - lot of IFs - and especially given his age, and that he had been through a bankruptcy, I'd think that he'd value money much greater than for him to just plop practically all he'd managed to scrape together into a motor home that he must have known would depreciate mightily.