> I am thinking hard about any use case for mortals (so not pro gamers, not folks running some automated trading from their home or whatever corner case there is) that can't be covered by latest wifi.

Wired 10G connections are vastly superior for file transfer. It's not even close.

Even 1G wired connections feel substantially snappier for remote desktop use than a high-speed WiFi connection 10ft away, in my experience.

But for browsing the internet and gaming? WiFi is great.