–so above scheme gives proportional fairness...
–can use M3I model for pay per ECN unmodified
–notice that the overall traffic adaption rate is slower
–But its slower for n unicasts anyhow, so?
–includes a two-level model (content and network
costs) but no coupling (necessary- unless
you want to bundle) - just rx counting, which ISPs
wanted anyhow, and CDNs have to have