DOH! Correcting myself in the use case of a public TV channel, IP broadcast does not help here (would generate traffic for no users), only IP multicast would handle it properly. Namely, under the authority of the "local" telecommunication regulator, multicast IPs would be statically allocated for all IAPs to provide to users, and not only CDNs, efficiently distributing content like public TV channels (for a public TV channel, probably a high bandwidth IP and a low bandwidth IP, etc). I don't know the real reasons why this is not done, the IP multicast "subscribe/unsubscribe" state machine is not robust, etc?