Most households with 4+ people are going to have dozens of connected devices, including multiple doing HD to 4K entertainment streams, outgoing video feeds, and (at least on PS5) the occasional unexpected 80GB updates to a video game you were just about to play. This in addition to the apps/webapps that are often in the 10s of Mb of content served per click.
Those households also have one poorly configured Wi-Fi access point, which is jockeying for airtime with dozens of competing access points in the same frequency range, meaning the customer is realistically going to see maybe 200Mbps aggregated across those devices (due to interference, channel congestion, that one streaming device with a -90dBm signal sucking up all the airtime at the lowest supported data rate...)
IMHO we need to address the "last meter" experience before mandated gigabit internet speeds mean anything.
Multiple simultaneous 4K streams does not describe any household I know. How much TV are you people watching? It seems like an exceptionally high level of media consumption, in my experience.
Furthermore, 4K video is < 25mbps each per stream, usually.
