Probably good, but again, heat reclamation vs free cooling vs AC also matters. In terms of environmental impact, where the heat goes is of enormous consequence. If Google are using AC, they're raising energy demand and therefore lengthening the road to decarbonisation. If they are using free cooling, that's sort of OK. If they're pumping heat to people's houses, that's fantastic as it displaces their heat demands.

No dispute here that economies of scale apply on the compute side.

More on data centre heat reclamation:

https://www.danfoss.com/en/markets/buildings-commercial/shar...