Most wild Asian tigers are the common property of the humans and governments that control the lands they inhabit. This poses a significant problem for maintaining the wild tiger population in the future since
1) everyone has property rights to these wild tigers, so everyone has an economic incentive to be concerned about the wild tiger population.
2) everyone has property rights to these wild tigers, but don't have an incentive to take care of these tigers.
3) no one has any property rights to these wild tigers, thus there is no economic incentive to be concerned about the wild tiger population.
4) governments are not always willing to take responsibility for these tigers.