Well the internets business model is about to change, with the advent of BBC I-Player/Apple/Utube etc. The current infrastructure for all IPS's not just uk, but in a good part of the world are creaking with the demands that video on demand and similar bandwidth intensive traffic puts on networks.
Gaming/Browsing/email use minimal traffic compared to these.
ISP's have already mentioned that content providers may have to pay them for their content to be available on their networks. (Pay for the upgrades) Or like what BBC are doing with I-Player allow it over the TV part of the network.
The alternative is a billing model which differentiates between Video on Demand and other high bandwidth traffic and others and involves extra monthly payments to download/view video over the network. Dont just think it is virgin with this problem every single UK ISP has the same issues/worries about the future of their network.
I think within 2-3 years there will be extra charges or even a move to the Austrailian model:-
http://www.theinquirer.net/en/inquir...ge-for-uploads
Also an interesting article here :-
http://www.guardian.co.uk/technology...7/iplayer.isps