You've cherrypicked the phrase "public good" and applied an out of context definition that doesn't fit. The thing being discussed was public utilities. Those ar

You've cherrypicked the phrase "public good" and applied an out of context definition that doesn't fit. The thing being discussed was public utilities. Those are a sort of public good in the same sense that public parks, public libraries, and free education are all public goods. The local electric utility isn't "non-excludable" (unless you ignore criminal law) but it is certainly a public utility, a natural monopoly, and public good by most metrics. The vast majority of jurisdictions regulate it accordingly.