@cwebber @xChaos Runs a small DC where I house my cobbled up "desktop Ryzen with ECC RAMs on a server board inside cannibalized old supermicro chassis" server.

Heat is reused by the inhabitants of the house apartments. They have this huge bag of water right next to my server. Now imagine if cities laid fiber and every other house had a small DC like that.

There is a middle ground.

@cwebber I don't think you could do modern computing without datacenters even if communication was free. A database the size needed by a State Farm or a Progressive Insurance needs to be hosted in a datacenter to meet QoS requirements. And to do datascience queries in a reasonable timeframe lots of compute resources are needed locally. In a datacenter these resources can be returned to the pool after the query.
@cwebber There was a line I read back in the '90s -- I think in something by Robert X. Cringely, but I've never been able to find the exact piece again -- that said "today eBay is hosted in a datacenter, but in 10 years it will be hosted on the CEO's laptop, and in 20 years it will be hosted on their wristwatch."

We lost that future when Moore's Law hit the wall, of course. But I still dream about it