One of the things that this group of "stewards" could do to get their costs down is get together and implement a high quality free software caching proxy that understands all their back-ends.
But that would compete with the commercial offerings of at least one of the organisations sponsoring that message. So I expect they won't do that.
But that would compete with the commercial offerings of at least one of the organisations sponsoring that message. So I expect they won't do that.