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Stop computering in places where fossile fuel is used for electricity. Build datacenters next to cheap renewable or nuclear energy and access cold air and water. There are hundreds of abandoned industry sites near lakes and rivers in Northern Europe for example.

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Believe it or not, cooling is almost never the bottleneck, aircooled datacenters can be built in relatively warm places like virginia. The infrastructure for datacenters is often the bottleneck - each one takes up the electricity of a small town and many out-of-the-way places don't have the infrastructure set up to support such things, nor do the local renewables provide enough energy to run the datacenters.

Yes the data enters need to be built in small towns with the energy production large cities or small countries, such as Facebook near the massive hydro plants in Luleå, Sweden.

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