Comment by robnado

This is an economics problem: if the cost of energy is lower or equal to the benefit of consuming it, the energy will be consumed. As more and more energy is consumed to run these datacenters, price of energy will go up, and datacenters will learn to either be more efficient, or will pass on these costs to their users who will learn to be more efficient. Of course, there might be inefficiencies like subsidies and monopolies that distort the market for energy for a while, but in the long run, this is a self-fixing problem.