One thing that's interesting: around where I live, property lines are defined by stone walls and you see tons of rando stone walls in the middle of the forest. Then if you do some research you find that 100% of all the trees were clear-cut back in colonial times and all the trees you see today are under 100 years old (yet it's a verdant forest during the summer). There used to be a ton more people - easily 10x - but the existing political structures are the same and mostly still work well enough.
