I’m following up here after doing some reading about public goods.
Public goods are (broadly speaking) better served through intervention by a central authority such as a government. As such, correctly identifying something as a public good helps explain why the (private) market has not provided a socially optimal quantity of that good.
I’m inclined to believe that bathrooms are excludable (because, for example, an entrepreneur can just put a lock on the bathroom that will only open after a credit card swipe/payment) and so are not public goods. Am I getting this wrong?
Okay, I think you’ve convinced me that there are important ways in which pay toilets might offer a better service than cafe bathrooms.
(I suspect that I was getting myself confused by sort of insisting/thinking “But if everything is exactly the same (, except one of the buildings also sells coffee), then everything is exactly the same!” Which is maybe nearby to some true-ish statements, but gets in the way of thinking about the differences between using a pay toilet and a cafe bathroom.)
(Also, I share your view that bathrooms are excludable and therefore not public goods. And I’m curious as to why @sunwillrise and @jmh believe that they are in fact public goods.)