Do you think the billionaires in their RVs at Burning Man would be willing to spend 6 months in that condition?

Even at a "ridiculously low" price of $500k, you're basically offering a mount Everest experience for people. Dangerous , uncomfortable, generally hard to do if you're not super free. A crazy adventure

Some people are interested, but you can't argue much for economy of scales when the total market of affordability is probably tiny.

Only 5000 people have ever climbed Mt Everest.