Yeah, of course someone might build on it. Or some developer might buy up all the adjacent land and build a subdivision.That would be ideal, however, you would have to own that mile in each direction. Because, eventually, there will be a neighbor (or ten) filling in that mile. Then it's time to move again.
I looked at some land years ago that was adjacent to Clark State Forest. The Topology and having the state forest behind it meant that the likelihood of any subdivisions coming in would be pretty much zero. But I passed on it because it was just too far from work. If I'd have known then what the future held I'd have gone ahead with it. Hindsight.