This is a thread about the wealthy investor class buying the literal land and shelter and hoarding it so they can profit off those they lease to. What was that you were saying about unsustainable and selfish?
Fight selfish with selfish.
Van life isn’t a scalable alternative to permanent housing. The reasons for this are many. One of the obvious ones is that if a wealthy investor class can buy up houses and extract rent they can certainly buy up vans and extract rent. So it isn’t even resistant to the very problem you suggest it can solve.
Take a look at how much a 1980s VW Westfalia is these days. It’s as absurd as house prices.
Land in desirable areas seems to me to be a much more scarce resource than the inputs and labor that go into a vehicle, especially if you add time - aka decades to make such things cheaper. Not sure how time and technology can do the same for land ownership.