In short it can be described as: [^1]
> When a person can enjoy the benefits of a group’s efforts whether they contribute or not, there’s an incentive to let others do the work.
The problem was widely described in [Governing the Commons](https://www.amazon.pl/dp/1107569788):
> Whenever one person cannot be excluded from the benefits that others provide, each person is motivated not to contribute to the joint effort, but to **free-ride** on the efforts of others. If all participants choose to **free-ride**, the [[Collective|collective]] benefit will not be produced.
>
> The temptation to **free-ride**, however, may dominate the decision process, and thus all will end up where no one wanted to be.
I find the part `cannot be excluded` crucial and explaining why certain [[Collective|collectives]] are actually struggling, as the is no option of [[Ostracism|ostracism]] and individuals are aware of it.
[^1]: first read on [Sketchplenations](https://sketchplanations.substack.com/p/the-free-rider-problem)