Residential ISPs usually have a contention ratio somewhere around 30:1 to 50:1. That means that 30 to 50 customers that each have a 1Gbps connection all share 1Gbps of upstream bandwidth.

Business connections are closer to 10:1, and a leased line (dedicated circuit) is 1:1.

An interesting side effect is that the models coming out of China are very efficient. They don’t have access to all the high-end hardware the US has, so they have to make do with what they’ve got.