It's not only about the connectors. With ethernet(avb or dante) you get networking audio(ip based) and time sync over long cables. This is not really possible

It's not only about the connectors. With ethernet(avb or dante) you get networking audio(ip based) and time sync over long cables. This is not really possible with USB, jacks, firewire etc. A single ethernet connector may have hundreds or thousands of audio channels but then you are right that a switch is required to split them so the low number of connectors may be an issue in some cases(unless you are willing to buy a switch)