Maybe like ADSL was originally advertised in some markets, with the contention ratio?

In your scenario, 10:1 contention ratio, "up-to" 1Gbps throughput, 1Gbps link-speed.

In the UK British Telecom originally offered 'consumer' ADSL at 50:1 and 'business' (more expensive) at 20:1 contention ratio specifically to deal with the backhaul limitations.