The thing you're forgetting (at least, for the A/V space) is that these days there's pretty much no such thing as video content that hasn't been compressed at s

The thing you're forgetting (at least, for the A/V space) is that these days there's pretty much no such thing as video content that hasn't been compressed at some point along the way. Broadcast ATSC tops out at 19Mbps (yes, mega-bits per second), and that's the best quality signal I can bring into my home. Everything else is compressed even more. So, there's plenty of bandwidth out there in a 54Mbps WiFi-style system to transmit several channels of "distribution quality" video & audio. I guess the only sources of "pure" HDTV content are the rendered sources, like XBox, PS3, or a PC's framebuffer. Those are all never-compressed video sources.