Here's a great start: https://en.wikipedia.org/wiki/Public_good https://en.wikipedia.org/wiki/Public_good Take a look at the third paragraph talking about free

Here's a great start: https://en.wikipedia.org/wiki/Public_good https://en.wikipedia.org/wiki/Public_good Take a look at the third paragraph talking about free rider and negative externalities. This is a strong intuitive explanation of the need for larger bodies to step in and regulate.