Comment by embedding-shape

Unless you truly self-host, get your own ASN and do your own peering, you most likely pay egress. But that's not to say this is the only way to operate, if you manage your own ASN and peering, you stop paying per TB transferred and start paying for available bandwidth instead.

Given the technical chops, it wouldn't be impossible to actually run a FOSS non-profit for hosting FOSS packages and libraries.