When did RJ45 last got a relevant update? 1 Gb/s is more than 2 decades old. It is still way more than enough for almost everyone. And it does not need a lot of power to operate.
They are coming out with new cabling standards to allow multi gbps over extended distances. There is still a lot of room for growth. You are right that nothing more is needed for the average use case though.
When did RJ45 last got a relevant update? 1 Gb/s is more than 2 decades old. It is still way more than enough for almost everyone. And it does not need a lot of power to operate.
They are coming out with new cabling standards to allow multi gbps over extended distances. There is still a lot of room for growth. You are right that nothing more is needed for the average use case though.