Underground aquifers are vital natural reservoirs of water, but they frequently suffer from the 'tragedy of the commons'. Because these aquifers run beneath vast tracts of land owned by different individuals, they represent common access resources (CARs). It is highly difficult and costly to exclude landowners from drilling wells and extracting water from the shared pool.
In agricultural regions, individual farming businesses have a strong financial incentive to pump as much water as possible to irrigate high-value crops and maximize short-term profits. However, because no single business owns the aquifer, none have an incentive to conserve the water for the future. Individual self-interest leads to collective over-extraction, resulting in depleted water tables, land subsidence, and dried-up community wells. This unsustainable depletion represents a significant market failure, creating negative externalities that threaten food security and local ecosystems. Economists often suggest that defining and enforcing clear property rights is a crucial step in preventing such degradation.
With reference to the information provided in Extract B and your own knowledge, explain two characteristics of private ownership in a free market economy.