What if Facebook wanted to open up parts of the site for users without an account, would that require a major reengineering? I've wondered why Facebook (and Instagram) are so strict about not showing anything to logged-out users, could technical reasons be part of that decision?
I think this currently exists in some shape or other, I don’t have a facebook account but I can click on profiles of businesses and get their opening hours and pictures of their menus or whatever. In think there must be some stuff with a public context.