I should mention as a pp has said that what happened after the cameras stopped rolling on Win the Wilderness was very sad, although it does illustrate the issues with all this stuff. I got sucked into watching It because I couldn't wrap my head around what any of them were thinking, then googled it afterwards and discovered It wasn't so rosy as presented.
It was about an elderly couple who'd been living in a cabin in a remote part of Alaska (so no running water, off grid, no other people, no road access, deep brutal winters, etc) but were too frail for that way of life anymore - they'd been trying to sell up for years unsuccessfully and then agreed to a reality show format where young British couples flew out to Alaska and completed challenges and interviews for the owners to select winners to take possession of the cabin and continue their legacy by living there.
The ones chosen weren't in a position to move out there and one of them had MS. I didn't quite understand why you'd pick them If what you wanted was a couple to continue running the cabin for another generation.
Of the original owners: The wife died after filming, the husband refused to surrender the property and ended up in a really toxic situation and estranged from his family.
Up until that it was just baffling and a bit shocking ( "I know nothing about the wilderness and have never been to Alaska, but want to permanently relocate to an isolated off-grid cabin in Alaska with my girlfriend of 12 months").
Essentially it was a group of people making irrational / delusional decisions and/or being exploited. The man who built the cabin seemed to have been living off telling his story for a long time so I'm not sure he was totally naive about getting into reality TV but who knows what really goes on in anyone's life. Maybe none of them ever thought it was intended to be real.
I suspect some of the people on shows like this plan to earn their living from marketing their lifestyle and story rather than living off the land as presented.