[0] https://www.selc.org/news/xai-built-an-illegal-power-plant-t...
Well considering that ~80% of the price is hardware deprecation, I don't know why they'd be considerably worse than anyone else at negotiating hardware deals.
Typically when you buy in bulk, you have more sway.
Companies like Google also have in-house chips like TPUs that are substantially cheaper for inference for them to make than anyone else can get through Nvidia.