This article talks about how it can be tricky to decide what counts as a public good versus a private good. They say most things are a mix of both types. But with tools like property rights, organizations, and technology, private companies can provide public goods effectively. When businesses compete, they find different ways to offer public goods or services privately. Sometimes, the usual rules about who can use something for free or who can be excluded from it don't apply when it comes to public goods. So, non-government groups can also provide public goods without making a profit, and that can be a successful way to do it.