I don't see why they would not have Tbps uplink. ISP infrastructure is symmetric fiber. A single fiber can do 100 Gbps without troubles. And when you have to b

I don't see why they would not have Tbps uplink. ISP infrastructure is symmetric fiber. A single fiber can do 100 Gbps without troubles. And when you have to bulldozer the road to lay the fiber, you don't put a single fiber but a pack of a hundred. There is no crosstalk between fibers unlike with copper, so one has interest to put as many as possible.