I think Apple should shift away from personal computing (iMac, MBP/A, iPhone) and focus on selling their SoC. Get these into data centers.
Powering a data center with their chips would likely result in significant decrease in power consumption. I am running an “old” M1 as a small remote k8s cluster for personal dev work and home automation. Works wonderfully.
Power consumption during peak load (20 W?) is very low compared to my Intel based computer (120-150W?) I use for occasional gaming.