I’ve been increasingly interested in the motivations behind, and implications of, Open Source / Free Software, for different kinds of projects. This GNU article has an outdated reference to a CD-ROM, but the philosophy should remain intact. With regards to selling it, I think “Free Software” has a kind of naive feeling to it.
And yet, several big platform projects do so profitably (by hosting, providing support, or paid feature development); like Discourse. Or successfully in a non-monetary way, like Mastodon. But these two initiatives also appeal to self-hosters. Is there an FOSS platform initiative that is intentionally/mainly centralized, and successful?