Tragedy of commons refers to an economic problem in which
people overuse a resource which decreases the quantity of good
consumed by the other people.
People overuse a resource for their personal benefits or gain,
which increases the demand for that good and the supply
decreases.
They neglect the need of other people in the society for that
resource and overuse them until it is no longer available for
others to utilise it.
This unethical act of individuaIs leads to a net social welfare
loss as people overuse a resource to reap out all the benefits by
neglecting the well being of a society and other people face
shortages during the consumption of that resource.