> Typical copper ethernet is 1Gb/s, while USB 3 is 5 Gb/s, going on 10/20/40 Gb/s with USB 3.2, USB 4 .. thunderbolt.
All the bit rates you listed Ethernet also covers. And as for copper - at the speeds you listed thunderbolt and USB3/C are limited to severely short cables, a measly 0.5 meters for 40Gb. Though 20Gb can do 1 or 2m, 2m being the longest thunderbolt cable you can use.
As for power, that devil is in the interface details. I see no reason why multi-gigabit Ethernet can't be pushed over a similarly designed low power differential copper serial transceiver.
As far as I'm concerned, Ethernet is more mature than USB could ever dream of being.
Ethernet is more mature, I like it. But to compete in most USB use-cases it would have to re-engineered so much, it wouldn't really be ethernet any more.
You don't think we need to change ethernet so much as to augment it with a co-processor that handles the "bus" aspect such as detecting when devices are plugged/unplugged and interrupt handling. Ethernet is just another serial port with higher level mechanisms which handles framing of the data. We just need a little more brains to handle the bus aspect and a simple protocol to talk to devices with as little overhead as possible.
All the bit rates you listed Ethernet also covers. And as for copper - at the speeds you listed thunderbolt and USB3/C are limited to severely short cables, a measly 0.5 meters for 40Gb. Though 20Gb can do 1 or 2m, 2m being the longest thunderbolt cable you can use.
As for power, that devil is in the interface details. I see no reason why multi-gigabit Ethernet can't be pushed over a similarly designed low power differential copper serial transceiver.
As far as I'm concerned, Ethernet is more mature than USB could ever dream of being.