>It also massively curtails usage, to the extent that it is a net negative for the ISPs I think that's the reason why Comcast wants to do the 300GB 'unlimited'

>It also massively curtails usage, to the extent that it is a net negative for the ISPs I think that's the reason why Comcast wants to do the 300GB 'unlimited' with a $10/50GB overage charge. As they get the best of both worlds. The issue with having a 'hybrid' plan is that to Comcast's finance department they still view it as a fixed gross per customer. Where-as with metered usage, the finance department would hopefully realize that the bigger the pipes the greater the potential for $$$. In regards to peering, Comcast currently has no incentive to upgrade there peering exchange points. But in a metered system, they have a lot of money to gain for upgrading the exchange points. Giving level 3 and Comcast incentives to upgrade peering exchanges. (Today its only Level 3 who benefits).