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Yeah but performance / watt will decrease - Quadratically with improved chip scaling - orders of magnitude with improved model efficiency

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And usage will grow accordingly, as usual.

My car engine is a miracle of efficiency compared to the stuff we had a hundred years ago, but overall cars pollute more than back then

Quadratically? As in, reducing power used for (external) communication/memory busses?

It's a very very very rough approximation, but scaling laws (admittedly weaking over time) yield ~x^2 from a size, ~x^2 from a dynamic power, and more of the data movement is moving from PCB interconnect to on package which looks more similar to chip scaling.

It's a finger in the wind approximation with lots of confounders, but historically it seems to work out that way for most circuit things.

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