MSFT is power constrained.[0]

[0] https://www.tomshardware.com/tech-industry/artificial-intell...

Everyone is. The grids always had a problem supplying enough power to even modestly sized commercial datacenters. This is what kicked off the trend of companies building their own datacenters in obscure cities that used to house large steel mills or other power hungry businesses.

I remember when everyone was racing to produce "datacenter in a shipping container" solutions. I just laughed because apparently nobody actually bothered to check if you could actually plug it in anywhere.