You could also do things like have a government murder squad regularly kill people in the area. Or give away drugs. Maybe cut down all the trees and put in a pi

You could also do things like have a government murder squad regularly kill people in the area. Or give away drugs. Maybe cut down all the trees and put in a pile of garbage. More seriously, if you are concerned the problem is the network effects of population density, the goal should probably be to replicate elsewhere rather than to disrupt.