That's a fair point, but even this kind of "exception" to the electricity tariffs (which gives the appearance of a subsidy and elicits public opposition) can be done in a more agnostic way. E.g. a 100 megawatt AI compute facility can be treated the same as a 100 megawatt aluminum smelter, can be treated the same as a 100 megawatt manufacturing plant. Large concentrated consumers of electricity can be treated differently than smaller consumers, but should all be treated the same as each other.