Closed-loop cooling and a custom 800G network protocol let the $7.3B campus run as one AI training machine. Microsoft confirmed June 23, 2026, that its Fairwater campus in Mount Pleasant, Wisconsin, is fully operational — and the engineering behind it makes the facility something fundamentally different from every data center that came before it. Where conventional cloud infrastructure racks up general-purpose servers and parcels out workloads to each one independently, Fairwater links hundreds of thousands of NVIDIA GB200 Blackwell GPUs into a single, coherent cluster using a two-story building design, 800-gigabit-per-second Ethernet fabric, and a proprietary networking protocol co-developed with OpenAI and NVIDIA. The result, according to Microsoft, is the closest thing to a purpose-built AI supercomputer that any company has ever placed in commercial operation. https://www.techtimes.com/articles/319205/20260627/microsoft-opens-fairwater-wisconsin-ai-campus-runs-one-supercomputer-via-800g-ethernet.htm  

Last comment on this article Decades of serving as a global manufacturing hub have allowed China to build a massive talent pool in the production sector that is almost unmatched worldwide. Decades of using "forced labor" have allowed China................. UN experts alarmed by reports of forced labour of Uyghur, Tibetan and other minorities across China https://www.ohchr.org/en/press...ibetan-and-other-minorities

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So why is it that the world’s largest economy, home to the most advanced technology companies and industrial powers, cannot produce a smartphone on its own soil? ISTM it is "won't", not "cannot"