even if the datacenter increase was a waste because the potential of LLMs never pan out relative to the massive investment, i think the flood of gpu and compute will definitely enable whatever could benefit from it. The next better AI application will be very thankful that gpu compute is abundant.
GPUs are easily and irreparably broken by overheating, so GPU compute is something that's high maintenance. It won't stick around like a building or a bridge.
Air conditioning is just heat displacement. It doesn't get rid of the heat, and if it gets hot enough it becomes physically impossible to remove enough heat to cool a building down, no matter how many air conditioners are installed.