Also does anyone know if AT&T, Compuserve, and IBM Global Net and EUNET
have proven large enough to escape UUNET's demands for money for continued
peering?
Judging by the routes shown at various places:
IBM Global Net is a customer of UUnet.
AT&T is a customer of BBN and UUnet.
Compuserve is an MCI customer.
And I've always believed there was a significant relationship
between EUNET (AS286) and UUnet, although I can't remember
exactly what it is.
So, I think the answer to your question is "Who cares?"
Pick another four companies and ask your question again.
-mark