Well the good news is the 1/r2 rule applies to people too (just go to the beach -- the huge mass of people is close to the entrance, and density drops off in a lovely bell curve). Hunters (in the California at least) are rarely far from their truck, especially in winter (for most species of game). The rock stackers are more likely to be in a national park presumably because they are accessible and have that vital wifi access.

There's lots of true wilderness (e.g. BLM land in the US, far northern Canada, etc) which are the opposite of "tightly controlled", mostly inaccessable to motor vehicles where you can travel for weeks without seeing another human.