Agreed. It's basically RF guided by wires, or light guided by glass/plastic.

And... I hate to say it, but I've been interacting with computers connected to WiFi about 90% of the time over the last week. Rarely used a physical Ethernet link.

Funny to think that WiFi is in fact just a specialized variant of the radio technology explosion that started with Marconi.

Technically of course the path is continual evolution, but the applications are wildly different.