Editing Market failure (section)

===Public goods===
Some markets can fail due to the nature of the goods being exchanged. For instance, some goods can display the attributes of [[public goods]]<ref name="demartino01" /> or [[common good]]s,<ref>{{Citation|last=Hussain|first=Waheed|title=The Common Good|date=2018|url=https://plato.stanford.edu/archives/spr2018/entries/common-good/|encyclopedia=The Stanford Encyclopedia of Philosophy|editor-last=Zalta|editor-first=Edward N.|edition=Spring 2018|publisher=Metaphysics Research Lab, Stanford University|access-date=2020-10-31}}</ref> wherein sellers are unable to [[Excludability|exclude]] non-buyers from using a product, as in the development of inventions that may spread freely once revealed, such as developing a new method of harvesting. This can cause underinvestment because developers cannot capture enough of the benefits from success to make the development effort worthwhile. This can also lead to [[resource depletion]] in the case of [[common-pool resource]]s, whereby the use of the resource is [[Competition|rival]] but [[Excludability|non-excludable]], there is no incentive for users to conserve the resource. An example of this is a lake with a natural supply of fish: if people catch the fish faster than the fish can reproduce, then the fish population will dwindle until there are no fish left for [[future generations]].