Unlike the investments in railways or telephone cables or roads or any other sort of architecture, this investment has a very short lifespan.
Their point was that whatever your take on AI, the present investment in data centres is a ridiculous waste and will always end up as a huge net loss compared to most other investments our societies could spend it on.
Maybe we'll invent AGI and he'll be proven wrong as they'll pay back themselves many times over, but I suspect they'll ultimately be proved right and it'll all end up as land fill.
Datacenters could go into the business of making personal PC's or workstations using the older NVIDIA cards and sell them.
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Cue the famous quote: “The market can remain irrational longer than you can remain solvent.”
I have a vague theory that as the amount of wealth inequality increases in a system along with “money printing” (lending, hypothecation, etc where the wealthy are permitted privileged leverage and risk), the more detached markets become from reality in general. In such a case, an increasing majority of the money circulating has no need to be grounded in anything close to the common basic needs and values that most normal people have to live with.
Instead, most important to such wealth is to tap into the source of inflation to be on the winning side of that. This becomes a game of its own, where an investment’s connection to reality or fundamental value is mostly irrelevant compared to how it leverages or monopolizes the state-created and privately created instruments of “money printing” (sketchy lending, rehypothecation, etc.) and other such “games” that only the wealthy are allowed in on.