You clearly have no idea of the extra infrastructure required to accomodate the vast extra energy demand from these centresThe cost of building and maintaining the infrastructure is integral in the electricity bill, which datacentres pay the same as everybody else.
Here's an interesting stat; in 1930 we were at 98% renewable electricity generation. This because the Arnacrusha hydro plant was newly built, and people didn't use much at that time.
The state made a huge but very wise investment in that plant.
We obviously had politicians in those days who had vision and substance about them, not just style and short term spin.