> If rents drop 3x (an economic disaster pretty much) are tent encampment inhabitants rushing to rent, coming up with deposits and getting pre-approved?

If we're dealing in hypotheticals, why do you seem to be asserting that they would not do so? If they can hold down some sort of job, and they can afford the lower rent why wouldn't they go for a real roof over their head?

Or are you saying that campers simply don't want that? I have no idea what you're on about with these questions...