With liquid cooling technologies (direct or rear door heat exchange), cooling efficiently is easier when compared to a decade ago, and it's pretty efficient when you compare the power consumption numbers (server total vs. cooling total).

See PUE (Power Usage Effectiveness) for its scientific form.

Cooling demand is only fractional with respect to the load: cooling 1MW of heat will only cost a few 10's to low 100's of kW, depending on the specifics. 10-20% overhead on cooling is probably a close enough estimate for napkin math.

And datacenters have impact on everything around them. If at the end of the day to result is a few more yachts and jets and, a lot more of miserable humans starving in ruined ecosystems, maybe that’s not the best go-to direction.