Re: Did I miss something?
At some point there will be legal mandates for energy recovery for Data Centres. I'm aware that there are already schemes where this piped out to the local municipality to heat local home's.
However building facilities that are more efficient in recycling the energy is going to be a challenge in both terms of design and cost. This would indicate the need for more liquid cooling to be able to capture the exhaust heat. What's not going to decrease is our appitite for compute power.