Could it be that they _have_ to run them like that because of the shortage of compute volume and once there are sufficient data centers, they can be run relatively cooler and thereby extending their lifespans? That doesn't bode well for NVIDIA/AMD.
> AFAIK, all hyperscaler hardware is effectively a consumable. Disks, memory, boards, chips; all the high-value pieces do not get refurbished into new computers for sale into secondary markets. The commercial and legal liability is too high---leaking their own proprietary IP as well as leaking customer IP, not to mention secrets and hardening configs and so forth.
Maybe that could be a catalyst for going for more "commodity" approach to hardware instead of highly spcialized (atleast for some sections of the hardware) so that the IP is not the hardware but the model/software and they can re-coup the costs by selling the hardware to "tier-2" providers that might emerge based on using cheaper second-hand hardware?