Cable broadband just got faster for free

Telewest is to offer the UK's first 3Mbps cable broadband service, as rival NTL doubles the speed of its services.
Faster broadband means the greater rate of adoption of richer services. That means more home working, more DVD quality downloads, broadband TV, music, etc. etc.

What is the betting that the broadband cable companies add a new entry level package at an even lower cost? The provision of service has a standard fixed cost. Would you see BT do this with their broadband offerings? They are hardly competitive but do have a large market share.