Because (consumer) ethernet is low bandwidth compared to whats needed for video. DisplayPort 2.0 provide a 80Gbps link. HDMI is 48Gbps. Both already use DSC whi

Because (consumer) ethernet is low bandwidth compared to whats needed for video. DisplayPort 2.0 provide a 80Gbps link. HDMI is 48Gbps. Both already use DSC which is a mezzanine compression as this is already saturated for immediate needs. Ethernet is absolutely used for media transport outside of the consumer space. Particularly where there's a need to distribute signals further than what DP or HDMI can provide. The challenge is this always comes with a trade off. Any compression will result in some mix of a loss of image quality, increase to latency, and cost. What that mix looks like differs across applications. See https://sdvoe.org/ https://sdvoe.org/, https://ipmx.io/ https://ipmx.io/, https://www.intopix.com/flinq https://www.intopix.com/flinq, https://www.aspeedtech.com/pcav_ast1530/ https://www.aspeedtech.com/pcav_ast1530/ for more in that space. https://hdbaset.org/ https://hdbaset.org/ is the other key tech. That uses the same PHY as ethernet, but is a proprietary signal.