[irishjohnnie]

The difference is how Comcast interprets its competitive position compared to its peers. The barriers to entry in the last mile is high regardless of the ISP but it is willing to leverage/extract rents/push the boundaries more compared to others that may be building goodwill/not push the regulatory boundary/sitting and waiting.

In other words it is acting like a monopolist or a shrewd business.

[pdonis]

In other words, there is no technical reason why it's any harder for Comcast to "route traffic to the customer's house" using the same arrangement as other ISPs. The reason it doesn't is that it's trying to get paid twice for the same traffic, which is a "business" reason (at least for some value of "business"), not a technical reason.

[irishjohnnie]

Yes, "trying to get paid twice" is what "extract more rent" and "rent seeking" means in other replies including mine.