Symmetrical just doesn't work on a network designed in the 70s 80s 90s for download/sending stuff to people. Aka cable service.

The upload portion of the Cable network was only ever designed to track channels, accept PPV, and phone home for errors.

It has been adapted and updated to get better but we are pushing the limits of what the current infrastructure (for cable/coax) can handle.

Fiber is totally different and good to go for serious speeds. I wish there was a lot more fiber around. I don't need 2Gbps down, Id settle for 500Mbps/500Mbps.