I don't know much about this but do these prices reflect electricity costs for a datacenter? Maybe the infra is different than for general public use.. maybe the last mile problems don't exist for data centers.

This is true. Data centres usually sign deals with power plants. But for the country as a whole, it does exacerbate the problem with a lack of energy.

And I’m perfectly happy to spend the energy as well! It’s just unclear what the benefit is to hosting within the UK.